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- Nitrates and nitrites, exiting widely in human environment, are the most popular nitrogenous substance. 硝酸盐和亚硝酸盐广泛存在于人类的环境中，是自然界最普遍的含氮物。
- Increase of nitrogenous substances, especially urea, in the urine. 氮尿氮物质的增加，特别是尿里的尿素
- Increase of nitrogenous substances,especially urea,in the urine. 氮尿氮物质的增加，特别是尿里的尿素。
- Using this product for long term, can efficiently avoid the suffocation of nitrification, promote the cycle of nitrogenous substance, avoid the water quality worsen and purify water quality, reduce the risk of breeding and increase the breeding benefit. 长期使用用本品后可有效避免硝化作用受阻、推动含氮物质的循环、避免水质恶化、净化水质降低养殖风险、提高养殖效益。
- The emery is a hard metallic substance. 金刚砂是非常坚硬的金属物质。
- Barium sulfate is a radiopaque substance. 钡硫酸盐是一种辐射光不能穿透的物质。
- a nitrogenous substance found in mucous secretions; a lubricant that protects body surfaces. 粘性分泌液中的含氮物质，保护体表的润滑剂。
- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- Musk is a kind of strong-smelling substance. 麝香是一种有强烈气味的物质。
- Graphite is a soft black substance. 石墨是一种软而黑的物质。
- This substance is soluble in alcohol. 这种物质能够溶解在酒精中。
- Her account was in substance correct. 她的账目基本上是对的。
- Ammonia is a chemical substance. 氨是种化学物质。
- The substance is irritable to sensitive skin. 这种物质对敏感的皮肤有刺激性。
- a nitrogenous substance found in mucous secretions; a lubricant that protects body surfaces 粘性分泌液中的含氮物质，保护体表的润滑剂
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- An inert substance used to dilute. 稀释剂一种惰性物质
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- The question was never discussed in substance. 这问题实际上从来没有讨论过。
- Gelatin is a clear tasteless substance. 明胶是一种透明无味的物质。
