Explain why barium forms peroxide but beryllium does not.解释为什么钡能形成过氧化物而铍则不能。However the toxic properties of beryllium limit its application.然而铍的毒性限制了它的作用.Toxicity problem in manufacturing and storage might be alleviated ...
Amorphous beryllium hydride , as ablator, can increase conversion from laser to X - rays .非晶 BeH2 材料作为烧蚀层, 掺入高Z元素后可以提高激光 -X 光的转换效率.Toxicity problem in manufacturing and storage might be alleviated by coating beryllium wi...
The meeting of the old classmates was extremely cordial.老同学聚会在一起,分外亲热.We maintain cordial relations with our neighbors.我们与邻里保持亲切友好的关系.The hostess is very cordial.女主人非常热情....
Vitamins function as photoreceptor mechanism of retina, maintenance of integrity of epithelia, lysosome stability, glycoprotein synthesis.它的作用有:视网膜光受体机制 、 护上皮细胞的完整性 、 酶体的稳定性 、 蛋白的合成等.The structure and function of carbohy...
这些合金可在不同的温度[热度]熔接.These alloys weld at different heats.我们用焊锡熔接管子.We fused the pipes with solders.在这样的高温下熔接钢铁需要快速.It takes speed to weld steel at this heat....
直血管降支呈束状进入髓质.The descending vasa recta run in bundles into the medulla.髓质血流汇入粗而短的薄壁静脉.Blood from the medulla enters short, stout, thin - walled veins.某些近髓质肾小球具有两种出球小动脉.Some juxtamedullary glomeruli have two efferent arte...
她迷惑地蹙着眉。She frowned in puzzlement.他迷惑地张着嘴.His lower lip hung loose in bewilderment.督学迷惑地问教师怎么回事.The educational inspector asks how the teacher returns a responsibility questioningly....