这些不断推陈出新的磁力计在此领域的研究起了很重要的作用,正如气压计对早期的天气预测起的作用一样. These magnetometers and their successors have played the role that barometers did for early weather forecasters.
Lisa was irritated by the slovenly attitude of her boyfriend Sean.莉萨对男朋友肖恩吊儿郎当的态度非常恼火。Not surprisingly, her teacher is getting irritated with her.毫不奇怪，她的老师有点被她惹恼了。Francis smiled agreement, irritated by the obviousness of...
加人预冷2一8℃的1%多聚甲醛1.0毫升并混匀.Add 2 ~ 8 C 1 % polysorbate 1.0 ml and mix them again.框架安装是聚甲醛树脂制成.The frame mount is made of delrin.并介绍了聚甲醛树脂的特性和主要应用领域.Moreover, the characteristics and the main applied fields of polyacetal res...