您要查找的是不是：
- sulfurous esters 亚硫酸酯
- Sulfur can be used to make gunpowder. 硫磺可以用来制造火药。
- A salt or an ester of boric acid. 硼酸盐一种硼酸盐或硼酸酯
- sulfurous ester 亚硫酯
- A natural or synthetic ester of glycerol and fatty acids. 甘油酯以甘油和脂肪酸天然存在的或合成的酯
- Iron and steel with too much sulfur are red-short. 含硫过多的铁和钢都是热脆性的。
- Reacts with alcohols yielding esters. 与酒精反应,产生酯。
- The main constituents were alkanes and esters. 小叶三点金全草主要含有烷烃和酯类化合物。
- A salt or an ester of lactic acid. 乳酸盐或乳酸酯
- Sulfur is an essential nutrient for plants. 硫是植物的一种重要的营养元素。
- A salt or an ester of titanic acid. 钛酸盐钛酸的盐或酯
- To eliminate sulfur from(petroleum, for example). 脱硫（例如，从石油中）除硫
- A salt or ester of hypochlorous acid. 次碳酸盐一种次碳酸的盐或酯
- Ester asked for time to think all this over . 埃斯特拉要求给她时间好好想一想。
- The unionized sulfur species is ??in water. 溶于水中非电离形式的硫即?妗?/UK>
- Isn't sulfur important in chlorophyll formation? 硫对叶绿素的形成很重要，对吗?
- Ester asked for time to think all this over. 埃斯特拉要求给她时间好好想一想。
- A sulfide compound containing at least two sulfur atoms per molecule. 多硫化物每个分子中至少含有两个硫原子的一种硫化物
- A salt or an ester of oxalic acid. 草酸盐草酸的盐或酯
- A salt or an ester of malic acid. 一苹果酸的盐或酯
