The last shot of an anchor cable is usually painted().
What color is used to indicate the last shot of anchor chain?()
What color is used to indicate the last shot of anchor chain?()
The next-to-last shot of an anchor cable is usually painted().
勾射
Stop and shot是( )的特征。
打靶区shot area
利用MLC进行分步照射(Step and shot)形成要求的强度分布,应将所有子野的注量()