!1813 PR1526 已完成，请审核

Merge pull request !1813 from Annie_wang/PR1526

en/application-dev/usb/usb-guidelines.md

@@ -6,7 +6,7 @@ In Host mode, you can obtain the list of connected devices, enable or disable th
 
 ## APIs<a name="section912mcpsimp"></a>
 
-The OpenHarmony USB service provides the following functions: query of USB device list, bulk data transfer, control transfer, and access permission management.
+The USB service provides the following functions: query of USB device list, bulk data transfer, control transfer, and access permission management.
 
 The following table lists the USB APIs currently available. For details, see the  _API Reference_.
 

en/application-dev/usb/usb-overview.md

@@ -2,7 +2,7 @@
 
 ## Basic Concepts<a name="section433mcpsimp"></a>
 
-The USB service in OpenHarmony is an abstraction of underlying hardware-based USB devices. Your application can access the USB devices via the USB service. With the APIs provided by the USB service, you can obtain the list of connected USB devices, manage device access permissions, and perform data transfer or control transfer between the host and connected devices.
+The USB service is an abstraction of underlying hardware-based USB devices. Your application can access the USB devices via the USB service. With the APIs provided by the USB service, you can obtain the list of connected USB devices, manage device access permissions, and perform data transfer or control transfer between the host and connected devices.
 
 ## Working Principles<a name="section485mcpsimp"></a>