钻头

bit side cutting action

钻头侧向切削作用

bit shift 移位 | bit side cutting action 钻头侧向切削作用 | bit side force 钻头侧向力

bit dresser

钻头修整机

bit 钎头 | bit dresser 钻头修整机 | bit dressing 钻头修整

drill chuck key

钻头扳手

钻头夹盘 drill chuck | 钻头扳手 drill chuck key | 凿 chisel

drill stem

钻头杆

"drill steel","钻头钢" | "drill stem","钻头杆" | "drill support","钻床支座"

bit hustler

废钻头收集者

bit hook 打捞工具 | bit hustler 废钻头收集者 | bit hydraulic calculator 钻头水力计算器

Pull out of hole bit

起出钻头

Drilling ahead. 钻进 | Pull out of hole bit. 起出钻头 | Change bit. 换钻头

drill speeder

钻头增速器

drill socket 钻头插口 | drill speeder 钻头增速器 | drill stand 钻架

bit standoff

钻头支距

bit stabilization techniques 钻头稳定技术 | bit standoff 钻头支距 | bit stream 位流

Bit Floundering

(钻头泥包)

? Bit Balling,Ball Up (钻头泥包) | ? Bit Floundering(钻头泥包) | ? Deflecting Tool (造斜工具)

u Bit Floundering

(钻头泥包)

u Bit Balling,Ball Up (钻头泥包) | u Bit Floundering(钻头泥包) | u Deflecting Tool (造斜工具)

leukemia virus：白血病病毒

leukemia 白血病 | leukemia virus 白血病病毒 | leukoplast 白色体

normal population：常态群体

Normal law of error 常态误差定律 | Normal population 常态群体 | Normal probability curve 常态机率曲线