您要查找的是不是：
- Nitrogen replacement and protection 氮气置换和保护
- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- The application of nitrogen replacement technology on the handling of LPG tank trailer accident 氮气置换技术在液化石油气槽车事故处置中的应用
- In addition, we supply small parts for replacement. 此外，我们还提供备用小零件。
- Good job they have get a replacement for him. 他们把他替换下来真不错。
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- We need a replacement for the secretary who left. 我们需要一个人代替已离职的秘书。
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- A replacement for deleted matter. 替代被注销内容的东西
- Keywords liquid-oil-gas;tank car;nitrogen replaceable equipment; 关键词液化石油气;汽车槽车;氮气置换装置;
- They are engaged in the supply of small parts for replacement. 他们从事提供备用小零件的工作。
- nitrogen replacement 氮气置换
- We get him as a replacement for eliot. 我们让他来替代艾略特。
- Will you sunder nitrogen from air? 你能从空气中把氮气分离出来吗?
- Replacement of stem nut in-line. 能够在线更换阀杆螺母。
- Nitrogen is the most commonly used gas. 氮气是最常用的气体。
- Good job they have got a replacement for him. 他们把他替换下来真不错。
- Sample gas tubes are flushed with nitrogen. 采气管得用氮气吹扫。
- My secretary leaves us next week, so we are advertising for a replacement. 我的秘书下星期要走，所以我们现在正登广告招聘一位替代者。
