不穿過(guò), 不插入

Unthread the pump from the air valve and measure sag. 參考?xì)鈮涸O(shè)定建議數(shù)值表打入相應(yīng)氣壓以達(dá)到所需的預(yù)壓行程。

To do so you need to loosen the top 3/8" nut and back it off without unthreading the threaded rod from the spider. 要這樣做，就要松開(kāi)頂部3/8英寸螺母并拿開(kāi)，不要旋松星輪上的螺紋桿。

The Soviet model had a deep influence on China, but it's historic certainty to unthread the model. 蘇聯(lián)模式對(duì)中國(guó)產(chǎn)生過(guò)深刻影響，但走出蘇聯(lián)模式也是歷史的必然。

In workover operation,running and pulling tubing and threading and unthreading in conventional way make the process complex,labor intensity high and operating environment hostile. 修井作業(yè)中,起下油管、上卸扣采用傳統(tǒng)作業(yè)方式過(guò)程復(fù)雜,勞動(dòng)強(qiáng)度高,作業(yè)環(huán)境惡劣,針對(duì)這種情況,提出了一種新的修井作業(yè)井口機(jī)械化系統(tǒng)設(shè)計(jì)方案。

Absorbable, causing little scars and no unthreading after operation 縫線(xiàn)可被肌體吸收、術(shù)后瘢痕小,不必拆線(xiàn)

Ensure material expedite on each chain, such as incoming, warehouse, workshop, shipping and unthread, improve the work efficiency; 負(fù)責(zé)物料及時(shí)接收，審核實(shí)際到料與采購(gòu)定單是否符合，保證所收的物料必須是需求的物料。