When sound waves enter the cochlea, which is really a tube coiled around, they set a membrane into a back and forth motion and cause a new wave. 当声波进入耳蜗这条盘旋的管道,它令薄膜前后移动并且产生新的波动。
Astronomy enthusiasts often enter this field as hobbyists, using binoculars or a telescope to observe the motion of planets or artificial satellites orbiting the earth. 很多天文爱好者最初对该领域的研究都是从业余爱好开始的,他们会用双筒望远镜观察星系的变化,观察人造卫星环绕地球运行的规律。
The exam that network education institute can unite through the country will admit a student, also can organize an exam to admit a student by oneself, standard of recruit students form and enter a school is set by pilot college proper motion. 网络教育学院可以通过国家统一的考试来录取学生,也可自行组织考试录取学生,招生形式和入学标准由试点高校自行规定。