Swivel packing seal assembly is the key of the swivel, whose function directly influences its service life, further more, and affects the drilling speed.
盘根密封是水龙头的关键环节,其性能直接影响水龙头的寿命和钻井速度。
The wash pipe packing of drilling swivel showed wear-and-tear continually in drilling process due to its structural design.
钻井水龙头由于结构设计的原因,冲管盘根在钻井过程中不断磨损,特别是在高压泥浆的作用下,盘根密封常常被破坏。
The mean value of work loads on a shaft bearing of swivel and rotary table is determined by basic principles of fuzzy theory, considering the loads' fuzziness and the requirement for reliability.
考虑钻机水龙头和转盘主轴承工作载荷的模糊性及可靠性要求，应用模糊数学基本原理求得平均计算载荷，从而计算出主轴承的模糊可靠性寿命。
turn on [off] a faucet
打开[关掉]水龙头
OPEC responded to the latest oil-price record by promising to open the taps.
水龙头。这里当然不是水龙头，而是指输油管龙头。
Connect the hose to the tap and turn on the tap.
把水管接在龙头上, 打开水龙头。
That faucet dribbles badly.
那个水龙头漏水严重。
play a hose on a fire.
用水龙头把水射向火焰
The faucets in the bathroom are leaking.
浴室的水龙头在漏水。
The water trickled from the faucet.
水从水龙头一滴滴流下。
This tap splashes.
这个水龙头会溅水。
This tap is a bad one-it splashes.
这水龙头不好,到处溅水。
A dripping tap wastes water.
水龙头关不紧就浪费水.
should avoid drinking tap-water,
应避免喝水龙头的水，
Someone has left the tap on, ie The water is running.
有人忘了关水龙头了。
Which is the hot tap?
哪一个是热水龙头？
There seems to be something wrong with the water tap.
水龙头好像出了点毛
And the Itsy Bitsy spider climbed up the spout again.
小蜘蛛又爬上了水龙头。
The Itsy Bitsy spider climbed up the waterspout.
一只小蜘蛛爬上水龙头。
Who left the tap running?
谁忘了关水龙头了?
He leave the tap open to fill the kitchen sink with water
他将水龙头开著让厨房的水槽注满水