The lamp cap can effectively avoid the loosening and falling-off of the pin, and the safety is high.

这种灯头能够有效避免销钉的松动与脱落，安全性高。

youdao

The lamp cap can effectively avoid the loosening and falling-off of the pin, and the safety is high.

这种灯头能够有效避免销钉的松动与脱落，安全性高。

youdao