Ethylene and trans - dichloroethylene are both inactive in the infra - red in this region.乙烯和反式二氯乙烯在红外光谱的这个区域都无活性.Plasma - polymerization of ethylene gives films of complex, uncertain structure.乙烯的等离子聚合得到复杂的, 无固定结构的薄膜.In...
Soon after spawning, the adult Pacific salmon will expire.产卵之后, 大马哈鱼很快也就寿终正寝了.Which adult in these children's lives will provide the nurturing they need?这些孩子生活中的哪个成人会为他们提供所需的养育呢？At the right is a probe patent forame...
将近100万人渡过这条河进入摩尔达维亚。Nearly one million people crossed over the river into Moldavia.该市曾面临种族危机，不过已经安然渡过。The city had faced racial crisis and come through it.正是我们坚持战斗的决心帮我们渡过了难关。It is only our determination to fight that ha...