环刀是用来取原状土（未扰动）实验用样的一种常用仪器，用来做容重、压缩、剪切和渗透等试验。
可转位加工工具（切削） 、圆棒、环刀、圆盘形锯、钻孔工具、车刀、导向槽、刀片。
Rotating machining tools ( cutting ), round rods, circular knives circular saws, countersinking tools, turning tips, guide gibs, knive blades.
采用一把螺丝刀从凹槽中拆卸螺旋阀座定位器环。
A screwdriver is used to remove the spiral seat retainer ring from its groove.
用锉、刀和环氧油灰修改普鲁士人。
The Prussian was modified with filing, cutting and epoxy putty.
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