钻头

The bit is nearing the shoe

钻头快到套管鞋了

Secure the safety clamp. 上紧安全卡瓦 | The bit is nearing the shoe. 钻头快到套管鞋了 | Slow down the running speed. 放慢下放速度

perforating drill

颅骨穿孔钻头

perforating bur 打孔钻 | perforating drill 颅骨穿孔钻头 | perforating machine 穿孔机

reaming bit

扩眼钻头

reaming 扩眼 | reaming bit 扩眼钻头 | rearrangement 重新配置

spudding bit

开眼钻头

spudder 轻便冲击钻机 | spudding bit 开眼钻头 | spudding drill 轻便冲击钻机

spudding bit

开眼顿钻钻头

spuare rump ==> 臀部丰满 | spudding bit ==> 开眼顿钻钻头 | spun acetate ==> 醋酯短纤维纱

spudding bit

浅槽钻头

短柄扳手 spud wrench | 浅槽钻头 spudding bit | 纺丝纱 spun silk yarn

ring auger bit

环形钻头

"环形电枢","ring armature" | "环形钻头","ring auger bit" | "带环螺栓","ring bolt"

auger?drill head

螺旋钻头

auger?backfiller 螺旋回填机 | auger?drill head 螺旋钻头 | auger?sinker?bar guides 冲击钻杆导向器

auger?drill head

麻花钻头

auger with valve ==> (钻浅井用)带阀螺旋钻具 | auger-drill head ==> 麻花钻头 | auger-lever ==> 螺旋操纵杆

auger stem

螺旋钻柱;钻头与振击器之间的钻具;钻杆

Auger spectroscopy 俄歇电子能谱学 | auger stem 螺旋钻柱;钻头与振击器之间的钻具;钻杆 | auger tank 搅拌混合罐

photoperiodic response：光周期响应

photoperiodic induction 光周期诱导 | photoperiodic response 光周期响应 | photoperiodism 光期性

Multi-Variate Statistical Analysis：多元统计剖析

311. 多项距阵 Multi-Nominal Matrix | 312. 多元统计剖析 Multi-Variate Statistical Analysis | 313. 发电厂 Power Plant