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1·The troublesome separation of column chromatography would be avoided as crude product recrystallized inn-butanol.

粗产物采用正丁醇重结晶，避免使用较繁琐的柱层析分离。

2·Crude product by simple distillation, styrene recovery was 89.41% of total styrene monomer purity of 99.9%, and catalyst recycling, the effect is better.

粗产物经简单蒸馏，苯乙烯的总回收率为89.41%，苯乙烯单体纯度可达99.9%以上，并对催化剂进行再生利用，效果较为理想。

3·The results indicated that the growth could be accelerated by LHRH_A (crude product) with no significant changes in the contents of nutritious component in goldfish.

以上结果提示，投喂lhrh_a粗制品可以促进鲫鱼生长而不影响它营养成分的含量。

4·The p-methylaniline and other impurity in the crude product are adsorbed by active carbon and the purified 4B acid is precipitated out by acidic solution from middle compartment.

阴极碱性液溶解4B酸粗品，活性炭吸附除去从粗品中溶出的对甲苯胺等杂质，中间区的酸性液使4B酸精品析出。

5·Reaction product vapor through methyl formate separating area, condenser and tail condenser, methyl formate crude product mixed liquor is got from gas phase condensation separating.

反应产物蒸汽依次通过反应器上部精馏区内的甲酸甲酯分离区、冷凝器、尾凝器，从气相冷凝分离得甲酸甲酯的粗产品混合液。

6·The results showed that the major component of the crude product was the desired tridecapeptide and the main by-products were derived from the oxidation or deformity of the desired peptide.

结果证明，粗产物中的主成分即为目标十三肽，另外几个主要副产物为十三肽的残缺肤或氧化肽。

7·Sucrose is available for use in fermentation processes either in crystalline form or in crude form as raw juice or molasses (a by-product of sugar manufacture).

蔗糖可在发酵过程中被利用，包括晶体结构、天然糖浆、糖蜜（食糖加工的副产品）。

8·Crude oil is a natural product which disperses and biodegrades in the ocean fairly rapidly, although some of it may remain over the longer term.

原油是一种自然产物，在海里能够相当快的分解和降解，尽管有一部分还是会停留很长一段时间。

9·Carbon dioxide is produced as a crude by-product of a number of manufacturing processes.

二氧化碳是作为许多工业生产过程的天然副产品生产的。

10·Phenothiazine is an important fine chemical product and crude material.

吩噻嗪是一种重要的精细化工产品和原料。