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safety drill
安全钻头
- There are no programmed activities, aside from the odd safety drill.
没有程式化的活动，但临时的安全训练除外。 - Besides, drilling mud has a positive effect on the safety of drill string.
钻井液对钻柱安全有积极的影响。 - According to the torque value, calculating that of drill string downhole , and checking the safety of the drill string.
根据该扭矩值推算到井下钻柱的扭矩值，并且校核了各点钻柱的安全性。
safety drill
safety drilling method
safety driver
safety economics
safety education
safety element
safety enclosed switch
safety enclosure
safety engineer
safety engineering
safety equipment
safety equipment requ...
safety evaluation
safety evaluation of ...
safety exhaust
safety experiment
safety exploder
safety explosive
safety extinguishing ...
safety eyewear
safety facilities
safety factor
safety factor against...
safety factor against...
safety factor for ult...
safety factor laoding...
safety factor of shea...
safety falling velocity
safety feature
safety fence
safety film
safety finger (钟)
safety fire line
safety firebreak
safety first
safety flange
safety flap
safety flare
safety flask
safety forest adminis...
safety fork
safety friction clutch
safety fuel
safety fund
Safety Fund Act
safety fund system
safety funnel
safety funnel tube
safety fuse
safety gap
safety gate
safety gauge
safety gear
safety glass
safety glasses
safety goggles
safety governor
safety grid
safety gripper
safety gripping gear
safety drilling method
safety driver
safety economics
safety education
safety element
safety enclosed switch
safety enclosure
safety engineer
safety engineering
safety equipment
safety equipment requ...
safety evaluation
safety evaluation of ...
safety exhaust
safety experiment
safety exploder
safety explosive
safety extinguishing ...
safety eyewear
safety facilities
safety factor
safety factor against...
safety factor against...
safety factor for ult...
safety factor laoding...
safety factor of shea...
safety falling velocity
safety feature
safety fence
safety film
safety finger (钟)
safety fire line
safety firebreak
safety first
safety flange
safety flap
safety flare
safety flask
safety forest adminis...
safety fork
safety friction clutch
safety fuel
safety fund
Safety Fund Act
safety fund system
safety funnel
safety funnel tube
safety fuse
safety gap
safety gate
safety gauge
safety gear
safety glass
safety glasses
safety goggles
safety governor
safety grid
safety gripper
safety gripping gear
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中国词汇量第二的英语词典
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