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- preparatory gas freeing 初步除气
- Open pump suction venting valve until gas free. 打开泵入口管线上的放空阀,至无气体。
- Open pump casing high pointing venting and discharge high pointing venting until gas free. 打开泵体的高点放空阀及出口管线高点放空阀,排气至无气体。
- Fuel oil transferring, sludge removal, cleaning, ventilating and gas free of the relevant fuel tanks are required before hot work for repair on the above-mentioned items Nos.4 &5. 为上述第4和5项进行热工修理前与其有关的燃油舱内的燃油、油渣需要驳出、舱需要清洁、通风和测爆。
- They finished the preparatory training. 他们完成了预备训练。
- What are your preparatory measures? 你的初步措施是什么?
- Her son is studying in a preparatory school. 她儿子正在一所大学预备学校学习。
- I did preparatory exercises before the race. 我在赛跑前做了准备运动。
- There is much preparatory work for us to do. 我们有许多准备工作要做。
- I'll refill my cigarette lighter with gas. 我将给打火机再灌满汽油。
- A preparatory action or measure. 准备预防性行动或措施
- The gas bubbled to the surface of the water. 气体变成气泡升上水面。
- We are well served with gas in this town. 这个城镇煤气供应得很好。
- He cooks his meal with a gas stove. 他用煤气炉做饭。
- Don't forget to drop by at the gas station. 别忘了到煤气站去看看。
- I was given gas when they pulled my tooth out. 给我拔牙时用了一氧化二氮。
- You should pack it up preparatory to sending it by post. 在邮寄之前你应该把它包好。
- His long speech was nothing but gas and hot air. 他的长篇大论只是吹牛和空话。
- The gas main explode and set fire to the house. 煤气总管爆炸引起房子失火。
- A whole tankful of gas dropped away because of the tiny leak. 由于这个小小的漏洞,整整一油箱的汽油都漏光了。