Metals which were mutually soluble would tend to give strong junctions.可互溶的金属趋向于产生牢固的结合点.All junctions of floor, wall and ceilings shall be sealed and preferably coved.地面 、 墙壁和天花板的接缝必须密封,最好做成圆角.A semiconductor diode arra...
You can't have one without the other, as the song says.就像歌里唱的那样，两者密不可分，不能只取其一。He had to have one leg amputated above the knee.他的一条腿不得不从膝部以上截断。Refusing to have one leader has not helped the cause.拒绝推举一名领导者对此项事业毫无帮助。...
聚羟基乙酸的经典制备方法主要有两种:直接缩合聚合法和乙交酯开环聚合法.There are two means available for the preparation of PGA - synthesis polymerization and ring - opening polymerization....