Ozone is a highly reactive form of oxygen gas.臭氧是一种非常活跃的氧气形态。Objective: To research the clinic curative effect on acute fetal distress by Atropin with inhaling oxygen.目的探讨阿托品与吸氧联合治疗急性胎儿窘迫的临床疗效.The sample brominated epoxy...
Ozone is a highly reactive form of oxygen gas.臭氧是一种非常活跃的氧气形态。Ozone is produced by the reaction between oxygen and ultra-violet light.臭氧由氧气和紫外线发生反应而产生。Carbon, hydrogen and oxygen combine chemically to form carbohydrates a...
There are as well as density - dependent biological factors such as disease, predation, and intraspecific conpetition.还有密度制约的生物因素,诸如病害 、 捕食和种内竞争等.The results indicated that intraspecific and interspecific difference were...
He died in unexplained circumstances.他死因不明。Soon after leaving Margate, for some unexplained reason, the train was brought to a standstill.离开马盖特不久，不知什么原因，火车突然停了下来。Soon after leaving Margate, for some unexplained reason, t...
The craftsmen have ensured faithful reproduction of the original painting.工匠保证要复制一幅最接近原作的画.Some went as mercenary soldiers , others as merchants or craftsmen, some in organized groups , others singly.他们要么作为雇佣军, 要么作为商人或工匠...