Development and expectation on soil plug in driving or jacked open-ended pipe piles;
开口管桩土塞效应研究进展及展望
Finite element analysis of soil plug forming during suction anchor penetration;
吸力锚沉放过程中土塞形成的有限元分析
Model tests on soil plug formation in suction anchor for silty clay;
吸力锚土塞在粉质粘土中形成的模型试验研究
To solve the problem of setting of hydraulic packers in horizontal holes,a ball-and-seat and a setting ball plug is designed for two setting technologies respectively.
针对水平井液压封隔器不能实现坐封 ,采用盲孔球座不但不能洗井 ,还会在打压过程于油管内形成气塞 ,影响坐封效果 ;采用盲孔球座和分流开关组合方式又存在水击和不能洗井的问题 ,提出了单流阀坐封球座和坐封球塞 2种水平井液压封隔器坐封工艺 ,并研究设计了单流阀球座和坐封球塞。
corking machine, bottle or jar, industrial
工业用封塞机器,用于封瓶或广口瓶
She tucked her letter into an envelope.
她把信折好塞进信封。
a stopped (or stopped-up) nose.
阻塞的（或封住的）鼻孔。
Piston rings not sealing (oil being consumed by the engine).
活塞环没密封（引擎用油）。
Study on Corks and Synthetic Closures Sealing Wine
软木塞和高分子塞密封葡萄酒的研究
Maintenance simplified by easily replaceable piston seal and steel reinforced renewable rubber disc.
更换活塞密封环和钢胶复合密封板简单方便。
Reciprocating plunger seals have been substitute by mechanically or hydraulically actuated diaphragms in diaphragm pumps.
往复活塞密封被机械密封和液力隔膜泵所替代。
Hermetic reciprocating refrigerant compressor
GB/T10079-1988全封闭活塞式制冷压缩机
corker ,bottle, mechanical, weighting 10kg or less
封瓶用机械压塞机,重10㎏以下
Some pistons have seating rings of metal or leather.
有些活塞上有金属或皮革的密封环。
Improvement of Actuator Piston Seal Assembly for Water Turbine Driven Generator
水轮发电机组接力器活塞密封的改进
To cover, protect, or seal with a cap.
加帽于用帽或塞来遮盖、保护或密封
Blocking technology with bridge plugs for heavy oil thermal recovery on φ139.7mm casing wells
φ139.7mm套管井热采桥塞封堵工艺
Development and Application of Bridge-plug Sealing Detection String in Thermal Production Well
热采桥塞堵水验封管柱的创新与应用
The Analysis of Brake Piston Seal Failure of B757-200 Aircraft
B757-200飞机刹车活塞密封失效分析
"Thus, piston rings must be used to provide the necessary seal. The rings are installed in grooves in the piston. Actually, there are two types of rings, compression rings and oil-control rings."
所以活塞环就用来提供必要的密封。活塞环装在活塞的凹槽中。事实上有两种活塞环,气环和油环。
It is equipped with piston rings to provide a good seal between the cylinder wall and piston.
上面装有活塞环,从而使活塞和气缸壁之间具有良好的密封性。
Bassanio handed the letter to Portia and she read it:
巴塞尼奥把信交给了波西亚。她看了这封信：