The oligochitosan and chitobiose, produced by degrading chitosan, have exhibited some particular physiological activities and function.摘要壳聚糖降解制备的低聚壳聚糖和壳寡糖具有许多独特的生理活性....
Spectinomycin is a kind of antibiotics with alkalescence and water - solubility . It is also called actinospectacin.大观霉素(spectinomycin)又称奇放线菌素或壮观菌素(actinospectacin),是一种碱性 水溶性 抗生素....
他坚持让我们在亚特兰大市外不远的一家小餐馆歇歇脚。He insisted we stop at a small restaurant just outside of Atlanta.丹在自己的船舱里朝舱外凝视着。Dan was in his cabin, staring out of a porthole.除书面记录外，可能还有其他方法可以证实。There may be alternative methods of substantia...
What is required to achieve or maintain such viability?要达到或维持这种生存能力需要什么？Scientists are experimenting to find ways to ensure the viability of seeds for even longer periods of time.正如我们所说，科学家正在试验努力寻找让种子的生命力更加延长的方法。These ch...
The built-in safety device compensates for a fall in water pressure.该内置式安全装置在水压下降时能提供保护。The high and low-rise apartment blocks built in the 1960s are crumbling.20世纪60年代建造的高低不一的公寓楼群正在逐渐破损坍塌。We're going to have built-...