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- The design by using programmable computer techology to achieve the automatic control of pneumatic conveying of polyamide chipsand nitrogen recycling is introduced. 简要介绍了利用可编程控制器计算机技术，实现锦纶切片气力输送及氮气回收的自动控制。
- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- Recycling is the only proper way. 循环再生是惟一的好办法。
- We should encourage reclamation and recycling. 我们应当鼓励废物的回收和利用。
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- 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。
- nitrogen recycling 氮循环
- Urea nitrogen recycling 尿素氮再循环
- We take all our aluminum cans for recycling. 我们将所有的铝罐回收再利用。
- Will you sunder nitrogen from air? 你能从空气中把氮气分离出来吗?
- Squash your cans flat before recycling. 把饮料罐压扁了再送去回收。
- The rubbish is then carted away for recycling. 垃圾接着被运去作回收处理。
- The waste paper is baled, then sent for recycling. 废纸被打成大包，然后送去回收再利用。
- Nitrogen is the most commonly used gas. 氮气是最常用的气体。
- I think recycling is a good idea. 我觉得废物利用是个好主意。
- Sample gas tubes are flushed with nitrogen. 采气管得用氮气吹扫。
- Battery recycling helps protect our environment. 回收电池帮助保护我们的环境。
- The main reservoir of nitrogen is the atmosphere. 氮的主要蓄存库是大气层。
- Survey on congress of China EPS Recycling Council. EPS专委会会员代表大会简况。
