o-ring type device 带有O型圈的装置
But built-up sealing device, a newly developed one has the advantage of the "o" type and gets rid of its disadvantage.
组合式密封装置是一种新型低摩擦力的密封装置，它既保持了“O”型密封圈的优点，又克服了“O”型密封圈的不足。
The hydrocyclone type oil water separating device developed by the author and its effect are described. The great importance o...
介绍了作者研制的水力旋流器式油水分离装置及其效果，指出利用复合力对分离乳化油的重要作用。
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