chemical造句

例句与造句

1. Only about 2% of the deposits are chemical grade .
   蕴藏中只有大约2%是“化学级”的。
2. Cryoscopy is obtained by classical chemical methods .
   冰点是由经典的化学方法获得的。
3. Allelopathic chemicals are ecologically important .
   异株克生化合物在生态学上很重要。
4. These substances include many commonly used chemicals .
   这些物质包括许多常用的化学品。
5. Chemical thinners add another to the arsenal of sprays .
   化学疏除剂已列入农药的宝库中。
6. It's difficult to find chemical in a sentence. 用chemical造句挺难的
7. This chemical change can be expressed by an equation .
   我们可用反应式表示这种化学变化。
8. The chemicals used in the experiment must be very pure .
   用于这一实验中的药品必须很纯。
9. These chemicals are difficult to remove from water .
   要从水中清除这些化学物质是困难的。
10. They differ in solubility and chemical reactivity .
    它们在溶解度和化学反应活性上有差别。
11. Chemical constantly circulate or recycle in the system .
    化学物质在系统中不断循环或回流。
12. Growers must be prepared to use a range of chemicals .
    栽培者必须准备使用一系列的化学药剂。
13. Water is the most abundant chemical compound in the biosphere .
    水是生物圈中最丰富的化合物。
14. The state allotted them large quantities of chemical fertilizer .
    国家给他们调拨了大量化肥。
15. Oxygen is often used as reactant in chemical processes .
    在化学过程中，氧气经常充当为反应物。
16. Attention should be given to recovery and reuse of chemicals .
    应当注意化学品的回收和再利用。
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