It is important not to use conventional chucks for hammer drilling.重要的是用冲击式电机钻孔时别使用传统卡盘.These electro - permanent magnetic chucks are also available in long pole design.这些电永磁吸盘也可以利用长极块设计.The chucks are new ones for surfa...
她把一些水倒进提桶里.Formed a bucket brigade to carry water to the fire.青年拿起提桶,开始工作.The young man picked up the bucket and set about his task.抽水马桶取代了提桶.Flush toilets are replacing buckets....