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- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- Experience is their preparation for giving advice. 经验为她们进行咨询作了准备。
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- RV-L variable pressure adsorption nitrogen preparation equipment and its application to PET industry RV-L型变压吸附制氮设备在聚酯行业的应用
- The advertising campaign is still in preparation. 广告宣传攻势仍在准备中。
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- You can't pass an exam without preparation. 不准备就考不及格。
- A drug or preparation containing arsenic. 砷化合物含砷的药剂或制剂
- The dictionary is now in rapid preparation. 这本词典现在正在迅速编写之中。
- The preparation for his cough included camphor. 为医治他的咳嗽而调制的药中包括樟脑。
- Glycerol or a preparation of glycerol. 甘油，丙三醇甘油或丙三醇配制品
- Made up without preparation; improvised. 即兴的不经准备而作的; 即兴的
- Will you sunder nitrogen from air? 你能从空气中把氮气分离出来吗?
- Care or preparation in advance; foresight. 先见，提前考虑或准备; 远见
- Nitrogen is the most commonly used gas. 氮气是最常用的气体。
- Years of work have gone into the preparation of this dictionary. 这部词典的筹备工作已进行了多年。
- Sample gas tubes are flushed with nitrogen. 采气管得用氮气吹扫。
- The main reservoir of nitrogen is the atmosphere. 氮的主要蓄存库是大气层。
- What is the percentage of nitrogen in air? 空气中所含的氮的比例是多少?
