您要查找的是不是：
- Nitrates are used as fertilizers in agriculture. 硝酸盐在农业上用作肥料。
- Bone-meal and nitrates are common fertilizers. 骨粉和硝酸盐是普通的肥料。
- The soil is enriched with nitrates. 土壤里施了硝酸盐肥料。
- An acyl derivative of hydrazine. 酰肼一种由肼衍生而来的酰
- An example of the acyl group is the acetyl group. 乙酰基是酰基的一个例子。
- Nitrates leach from the soil into rivers. 硝酸盐由土壤渗入江河。
- Tannase is an acyl hydrolase of tannin. 单宁酶是水解单宁酯键的酶，用途广泛，具有重要的商业价值。
- Methods:EFTA is synthesized from EATA by one step:acyl. 方法:以2-氨基-噻唑基-4-乙酸乙酯(EATA)为原料;经氨基甲酰化反应得到 EFTA.
- The oxidation of ammonium compounds into nitrates by soil bacteria. 通过硝化细菌的作用将氨的化合物氧化成硝酸盐的过程。
- Our water supply is becoming polluted with nitrates. 我们的水源正受到硝酸盐的污染。
- Nitrates can turn into nitrosamines - cancer causing compounds. 硝酸盐类物质能够转变为亚硝胺---一种致癌化合物。
- Modern man pours a lot of nitrates into the rivers, lakes and seas. 现在人类向江河、湖泊和大海倾倒了大量的硝酸盐。
- Nitrates are present in the human saliva, as well as in some preserved foods. 硝酸盐类物质存在于人的唾液中以及一些存储的食物中。
- Nitrous esters can react with alkyl peroxides to yield alkyl nitrates. 亚硝酸酯与过氧化烷基反应，得到烷基硝酸酯。
- In a lake, for example, these nitrates cause a great growth in plant life. 就比如说一个湖泊吧，水里面的硝酸盐类使植物长势旺盛。
- We investigate the bleaching of neutral sulfite reed pulp by peroxy acetic acid (PAC). 对过醋酸(PAC)漂白中性亚硫酸盐苇浆进行了实验研究。
- Result There was no significant difference in disinfecting effect between 2% intensified Glutaraldehyde group and 0.5% peroxy acetic acid (P>005). 结果2%25强化戊二醛与05%25过氧乙酸比较,在不同的时间段,消毒效果差异无显著意义(P>005);
- Construction/introduction of the peroxy bond is the key (and the most difficult) step in the synthesis of organic peroxides. 形成／引入过氧键是合成有机过氧化物的步骤和难点所在。
- This article reported a new synthetic method of 2,5 dimethyl 2,5 di( t butylperoxy)hexane, one of the peroxy organic compounds. 报道一种有机过氧化物 2 ,5 -二甲基 -2 ,5 -双 (叔丁过氧基 )己烷 (简称双 2 5 )的合成新方法。
- Use of ammonia gas: fertilizer and various ammonia containing compound, various amidogen, acyl and other ammonia containing testing agents (explosives) etc. 氨气用途：化肥和各种含氨化合物。各种胺基、酰基、硝酸和各种含氨制试剂（炸药）等。
