Controls intended to be adjusted during installation or in normal use shall be provided with an indication for the direction of adjustment.
在安装或正常使用期间，打算调节的控制器应有调节方向的标示。
Controls intended to be adjusted during installation or in normal use shall be provided with an indication for the direction of adjustment.
在安装或正常使用期间，打算调节的控制器应有调节方向的标示。
应用推荐