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- Air consists chiefly of nitrogen. 空氣主要由氮氣組成。
- Nitrogen forms most of the Earth's air. 地球上空氣的大部分成分是氮氣。
- The lamp is full of gaseous nitrogen. 燈里充滿(mǎn)了氣體氮。
- Nitrogen forms about 78% of the earth's atmosphere. 氮約占地球大氣的百分之七十八。
- The nitridation mechanism was also discussed. 本文同時(shí)也對氮化的機理進(jìn)行了討論。
- Furthermore,the nitrogen pressure greatly influences the nitridation degree of aluminum a... 此外,氮氣壓力對于原料鋁粉的氮化程度及燃燒產(chǎn)物的微觀(guān)形貌有著(zhù)較大的影響。
- Will you sunder nitrogen from air? 你能從空氣中把氮氣分離出來(lái)嗎?
- Nitrogen is the most commonly used gas. 氮氣是最常用的氣體。
- Sample gas tubes are flushed with nitrogen. 采氣管得用氮氣吹掃。
- The main reservoir of nitrogen is the atmosphere. 氮的主要蓄存庫是大氣層。
- What is the percentage of nitrogen in air? 空氣中所含的氮的比例是多少?
- Fast neutrons are also captured by nitrogen. 快中子也可以被氮吸收。
- Nitrogen forms four-fifths of the atmosphere. 氮氣占空氣的五分之四。
- This article introduces and discusses the purification of ordinary nitrogen by coarse titanium powder and its application in gas nitridation technology of titanium surface. 介紹和討論利用粗顆粒鈦粉末凈化普通氮氣及其在鈦表面氣體氮化工藝中的應用。
- Nitrogen forms about four-fifths of the atmosphere. 氮約佔大氣的五分之四。
- What is the content of the crude nitrogen. 污氮的含氧量是多少?
- Is a nitrogen atmosphere needed for hand soldering? 手工焊接需要使用氮氣嗎?
- Nitrogen Atmosphere in Bearing Steel Ball H, T. 氮基保護氣氛中軸承鋼球的熱處理
- Nitrogen is a gas without colour or smell. 氮是一種無(wú)色無(wú)臭的氣體。
- Nitrogen is an essential food for plants. 氮是植物一種必不可少的養分。
