diff --git a/zh-cn/application-dev/reference/apis/js-apis-sensor.md b/zh-cn/application-dev/reference/apis/js-apis-sensor.md
old mode 100644
new mode 100755
index cb63f864889597ced4b90b697500b5398b99a0c0..6b9364c0f6de409adba49a67ab4832af31754042
--- a/zh-cn/application-dev/reference/apis/js-apis-sensor.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-sensor.md
@@ -1040,7 +1040,7 @@ try {
 
 ### ACCELEROMETER_UNCALIBRATED<sup>9+</sup>
 
-once(type: SensorId.ACCELEROMETER_UNCALIBRATED, callback: Callback&lt;AccelerometerUncalibratedResponse&gt;): voidMAGNETIC_FIELD
+once(type: SensorId.ACCELEROMETER_UNCALIBRATED, callback: Callback&lt;AccelerometerUncalibratedResponse&gt;): void
 
 获取一次未校准加速度传感器数据。