In the mass production era multinational firms tended to centralize their operations.在大规模生产的时代,跨国公司往往实行集权化经营。These precise instruments have already gone into mass production.这些精密仪器已经大规模投入生产.The development of a suitable ...
The various harmonics are in resonance in this cavity to different degrees.在口腔中,各种谐音的共鸣程度不同.It is made up of a superposition of harmonics.它的谱由一组线条组成.These are called spherical harmonics.这些叫做球谐函数....