物理学研究力学、热学 、 光学 、 声学和电学.Physics studies mechanics , heat, light, sound and electricity.这两个学生都做了不少电学实验.Both students have made quite a few experiments on electricity.从量子电动力学可以得出所有已知的电学 、 力学和化学定律.Out of quantum electrodyna...
Not the less, however, came this importunately obtrusive sense of change.然而, 那种起了变化的突出感觉仍然丝毫不减地纠缠着他.These heaters are less obtrusive and are easy to store away in the summer.这些加热器没那么碍眼，夏天收起来也很方便。"You are rude and obtrusi...
After renovation, production capacity of cuprammonia scrubber is raised above 20 %.改造后, 铜洗塔的生产能力提高20%以上.This article reports a method of preparation of metal - copper - powder with cuprammonia by directly chemical method...