筒形鉆 的英文怎麼說
中文拼音 [tǒngxíngzhēn]
筒形鉆
英文
cylindrical auger-
This paper is about studies of a new type of shale shaker using a new roller - structure screen, which is made by winding the normal flat screen or corrugated pyramid screen into rotter screen, and can be installed on the shale shakers being used in the oil fiem
本文研究了一種採用新型筒式結構篩網的鉆井振動篩，其篩網是將普通平板篩網或波紋錐形篩網卷製成筒形結構，並可安裝在現有的鉆井振動篩上。Shell core drills with hard metal tips
鑲硬質合金刀片的筒形擴孔鉆
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