When drill hole in sandy soil the desander should be timely turned on to reduce the sand content and ensure the drilling progressing and stability of the hole.
在砂土层中钻进时,要及时开启



,降低含砂率,保证钻进速度和孔壁的稳定。
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Per Musk's description, this chip will be installed in a person's brain by drilling a two-millimeter hole in the skull. " The interface to the chip is wireless, so you have no wires poking out of your head, " he assured.
按照马斯克的描述,该芯片会通过在头骨上钻
个直径2毫米的孔的方式安装在人的大脑中。 他保证道," 芯片的接口是无线的,所以你头上不会有电线挂出来。"