Vice hoist for the replacement of the drill pipe or other tools and put sand core tube can also be used for flushing operations.
钻机配有一个主卷扬机、一个副卷扬机。主卷扬机用于升降钻具、下井管等。副卷扬机用于更换钻杆或其他取芯工具及提砂筒，也可用于洗井作业。
Skull also include vice nasal, it connects with respiratory epithelia cells and atmospheric tube.
颅骨也包括副鼻腔，它连接着呼吸上皮细胞和大气管。
Skull also include vice nasal, it connects with respiratory epithelia cells and atmospheric tube.
颅骨也包括副鼻腔，它连接着呼吸上皮细胞和大气管。
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