update docs

Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>

en/application-dev/reference/apis/js-apis-bluetooth.md

 # Bluetooth
 
+The Bluetooth module provides classic Bluetooth capabilities and Bluetooth Low Energy (BLE) scan and advertising.
+
 > **NOTE**<br>
 > The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 
-The Bluetooth module provides classic Bluetooth capabilities and Bluetooth Low Energy (BLE) scan and advertising.
 
 
 ## Modules to Import
@@ -309,7 +310,7 @@ let remoteDeviceClass = bluetooth.getRemoteDeviceClass("XX:XX:XX:XX:XX:XX");
 
 getPairedDevices(): Array&lt;string&gt;
 
-Obtains the Bluetooth pairing list.
+Obtains the paired devices.
 
 **Required permissions**: ohos.permission.USE_BLUETOOTH
 
@@ -319,7 +320,7 @@ Obtains the Bluetooth pairing list.
 
 | Type                 | Description           |
 | ------------------- | ------------- |
-| Array&lt;string&gt; | List of the addresses of the paired Bluetooth devices.|
+| Array&lt;string&gt; | Addresses of the paired Bluetooth devices.|
 
 **Example**
 
@@ -343,7 +344,7 @@ Sets the Bluetooth scan mode so that the device can be discovered by a remote de
 | Name     | Type                   | Mandatory  | Description                          |
 | -------- | --------------------- | ---- | ---------------------------- |
 | mode     | [ScanMode](#scanmode) | Yes   | Bluetooth scan mode to set.                     |
-| duration | number                | Yes   | Duration (in seconds) in which the device can be discovered. The value **0** indicates unlimited time.|
+| duration | number                | Yes   | Duration (in ms) in which the device can be discovered. The value **0** indicates unlimited time.|
 
 **Return value**
 
@@ -447,7 +448,7 @@ Sets the device pairing confirmation.
 
 | Name   | Type     | Mandatory  | Description                              |
 | ------ | ------- | ---- | -------------------------------- |
-| device | string  | Yes   | Address of the target remote device, for example, XX:XX:XX:XX:XX:XX.|
+| device | string  | Yes   | Address of the remote device, for example, XX:XX:XX:XX:XX:XX.|
 | accept | boolean | Yes   | Whether to accept the pairing request. The value **true** means to accept the pairing request, and the value **false** means the opposite.       |
 
 **Return value**
@@ -598,7 +599,7 @@ bluetooth.off('pinRequired', onReceiveEvent);
 
 on(type: "bondStateChange", callback: Callback&lt;BondStateParam&gt;): void
 
-Subscribes to the Bluetooth pairing state change events.
+Subscribes to the Bluetooth bond state change events.
 
 **Required permissions**: ohos.permission.USE_BLUETOOTH
 
@@ -608,8 +609,8 @@ Subscribes to the Bluetooth pairing state change events.
 
 | Name     | Type                                      | Mandatory  | Description                                  |
 | -------- | ---------------------------------------- | ---- | ------------------------------------ |
-| type     | string                                   | Yes   | Event type. The value **bondStateChange** indicates a Bluetooth pairing state change event.|
-| callback | Callback&lt;[BondStateParam](#bondstate)&gt; | Yes   | Callback invoked to return the pairing state. You need to implement this callback.   |
+| type     | string                                   | Yes   | Event type. The value **bondStateChange** indicates a Bluetooth bond state change event.|
+| callback | Callback&lt;[BondStateParam](#BondStateParam)&gt; | Yes   | Callback invoked to return the bond state. You need to implement this callback.   |
 
 **Return value**
 
@@ -618,7 +619,7 @@ No value is returned.
 **Example**
 
 ```js
-function onReceiveEvent(data) { // data, as the input parameter of the callback, indicates the pairing state.
+function onReceiveEvent(data) { // data, as the input parameter of the callback, indicates the bond state.
     console.info('pair state = '+ JSON.stringify(data));
 }
 bluetooth.on('bondStateChange', onReceiveEvent);
@@ -629,7 +630,7 @@ bluetooth.on('bondStateChange', onReceiveEvent);
 
 off(type: "bondStateChange", callback?: Callback&lt;BondStateParam&gt;): void
 
-Unsubscribes from the Bluetooth pairing state change events.
+Unsubscribes from the Bluetooth bond state change events.
 
 **Required permissions**: ohos.permission.USE_BLUETOOTH
 
@@ -639,8 +640,8 @@ Unsubscribes from the Bluetooth pairing state change events.
 
 | Name     | Type                                      | Mandatory  | Description                                      |
 | -------- | ---------------------------------------- | ---- | ---------------------------------------- |
-| type     | string                                   | Yes   | Event type. The value **bondStateChange** indicates a Bluetooth pairing state change event.    |
-| callback | Callback&lt;[BondStateParam](#bondstate)&gt; | No   | Callback used to report the change of the Bluetooth pairing state. If this parameter is not set, this method unsubscribes from all callbacks corresponding to **type**.|
+| type     | string                                   | Yes   | Event type. The value **bondStateChange** indicates a Bluetooth bond state change event.    |
+| callback | Callback&lt;[BondStateParam](#BondStateParam)&gt; | No   | Callback used to report the change of the Bluetooth bond state. If this parameter is not set, this method unsubscribes from all callbacks corresponding to **type**.|
 
 **Return value**
 
@@ -1029,7 +1030,7 @@ Obtains a profile object.
 
 | Type                                                        | Description                                                        |
 | ------------------------------------------------------------ | ------------------------------------------------------------ |
-| [A2dpSourceProfile](#A2dpSourceProfile) or [HandsFreeAudioGatewayProfile](#HandsFreeAudioGatewayProfile) | Profile object obtained. Only **A2dpSourceProfile** and **HandsFreeAudioGatewayProfile** are supported.|
+| [A2dpSourceProfile](#a2dpsourceprofile) or [HandsFreeAudioGatewayProfile](#handsfreeaudiogatewayprofile)| Profile object obtained. Only **A2dpSourceProfile** and **HandsFreeAudioGatewayProfile** are supported.|
 
 **Example**
 
@@ -1055,7 +1056,7 @@ Obtains a profile instance. API version 9 is added with **HidHostProfile** and *
 
 | Type                                                        | Description                                                        |
 | ------------------------------------------------------------ | ------------------------------------------------------------ |
-| [A2dpSourceProfile](#A2dpSourceProfile), [HandsFreeAudioGatewayProfile](#HandsFreeAudioGatewayProfile), [HidHostProfile](#HidHostProfile), or [PanProfile](#PanProfile)| Profile instance obtained, which can be **A2dpSourceProfile**, **HandsFreeAudioGatewayProfile**, **HidHostProfile**, or **PanProfile**.|
+| [A2dpSourceProfile](#a2dpsourceprofile), [HandsFreeAudioGatewayProfile](#handsfreeaudiogatewayprofile), [HidHostProfile](#hidhostprofile), or [PanProfile](#panprofile)| Profile instance obtained, which can be **A2dpSourceProfile**, **HandsFreeAudioGatewayProfile**, **HidHostProfile**, or **PanProfile**.|
 
 **Example**
 
@@ -2200,7 +2201,7 @@ Subscribes to the characteristic read request events.
 | Name     | Type                                      | Mandatory  | Description                                   |
 | -------- | ---------------------------------------- | ---- | ------------------------------------- |
 | type     | string                                   | Yes   | Event type. The value **characteristicRead** indicates a characteristic read request event.|
-| callback | Callback&lt;[CharacteristicReadReq](#characteristicreadreq)&gt; | Yes   | Callback invoked to return a characteristic read request from the GATT client.           |
+| callback | Callback&lt;[CharacteristicReadReq](#characteristicreadreq)&gt; | Yes   | Callback invoked to return a characteristic read request event from the GATT client.           |
 
 **Return value**
 
@@ -2989,7 +2990,7 @@ if (retWriteDesc) {
 
 setBLEMtuSize(mtu: number): boolean
 
-Sets the maximum transmission unit (MTU) that can be transmitted between the GATT client and its remote BLE device. This API can be used only after a connection is set up by calling [connect](#connect).
+Sets the maximum transmission unit (MTU) that can be transmitted between the GATT client and its remote BLE device. This method can be used only after a connection is set up by calling [connect](#connect).
 
 **Required permissions**: ohos.permission.USE_BLUETOOTH
 
@@ -3668,6 +3669,18 @@ Defines the pairing request parameters.
 | pinCode  | string | Yes   | No   | Key for the device pairing.  |
 
 
+## BondStateParam<sup>8+</sup><a name="BondStateParam"></a>
+
+Defines the bond state parameters.
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+| Name      | Type  | Readable  | Writable  | Description         |
+| -------- | ------ | ---- | ---- | ----------- |
+| deviceId | string      | Yes   | No   | ID of the device.|
+| state    | BondState   | Yes   | No   | State of the device.|
+
+
 ## StateChangeParam<sup>8+</sup><a name="StateChangeParam"></a>
 
 Defines the profile state change parameters.