extrinsic stain

The experimental method of introducing exogenous DNA into wheat embryocallus under aseptic operation is reported.

报道了以小麦幼胚诱导的胚性愈伤组织为受体,在无菌操作条件下,用外源DNA 进行浸泡处理的实验方法。

Effects of exogenous enzyme on volatile flavor component of fermented mutton sausage were studied in this paper.

研究外源酶对发酵羊肉香肠挥发性风味物质的影响。

The tea flavour material was produced from the abandoned leaves of tea plant by the treatment of exogenous enzymes.

利用外源酶对茶树废弃老叶进行处理以制取茶风味物质,其最佳酶处理条件为茶水比1∶150,使用纤维素酶、果胶酶、酸性蛋白酶1∶1∶1组成复合酶,pH4。

The effect of exogenous enzymes on the activity of endogenous enzymes and the velocity of feed evacuation were studied when the fishes were fed with four sorts of diets which contained(250 mg/kg),(500 mg/kg),(750 mg/kg) and(1 000 mg/kg) exogenous enzymes respectively.

3)g的异育银鲫300尾为试材,研究了在基础日粮中添加外源酶制剂250 mg/kg、500 mg/kg、750 mg/kg、1 000 mg/kg后,外源酶对异育银鲫内源酶活性、肠道食糜排空速度的影响。

The results of eutrophication analysis showed that internal pollution sources and external pollution sources were the main causes.

对富营养化成因进行分析,结果表明外源污染和内源释放是造成沙湖富营养化的主要原因,黄河补水和地表径流是主要的外污染源,最后根据分析结果提出沙湖富营养化的防治对策。

The study on the causes of eutrophication shows that internal pollution sources and external pollution sources are the main causes for the eutrophication .

对富营养化成因进行分析,结果表明内源污染和外源污染是造成洋河水库富营养化的主要原因,其中淀粉废水和地表径流是主要的外污染源。