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- The wave beam can be efficiently radiated from a conveniently short antenna. 波束可以从一根使用方便的短天线上有效地发射出去。
- The wave beam can be efficiently.radiated from a conveniently short antenna. 波束可以从一根使用方便的短天线上有效地发射出去。
- Axicon's diffraction mode for spherical wave beam with eccentricity[J]. 引用该论文 王中宇;张朵;李萌;高晓颖.
- It is possible that the incident spherical wave beam is tilted with the optical axis of the axicon in practical measurement. 在实际使用中,入射球面波很可能与圆锥透镜的光轴发生倾斜。
- Using spherical wave beam to illuminate an axicon will result in a beam with small central spot and large focal depth, which is useful for laser communication and long-distance measurement. 由于球面波入射圆锥透镜所产生的出射光束具有焦深长和中心光斑直径较小的特点,适合激光通信以及长距离测量。
- A little apart from the surf ace, the longitudinal wave beam may exist and propagate parallel to the surface,yet has to connect with its corresponding gliding irrotational waves. 离开固体表面稍远的区域,可以有平行于表面传播的纵波声束存在,但是需要与相应的滑行集散波相互衔接。
- A new OE-HOE system has been worked out,with which the large-aperture collimated waves,large-aperture convergent wa- ves,astigmatic waves,or wave beam with cross-section of any aperture shape can be produced. 本文给出一种光学元件(OE)与全息光学元件(HOE)的组合系统,利用它可以获得大口径高精度准直波、大口径会聚球面波和象散波以及各种形状截面的光波。
- She performed on the balance beam with much grace. 她在平衡木上表演得非常优美。
- The beam of the searchlight pierced the darkness. 探照灯的光柱射入黑暗中。
- His answer was right on the beam. 他的答案完全正确。
- Bill wave his hand to us and then drive away. 比尔向我们挥手告别后开车走了。
- Radio2 can be heard on the long wave band. 第二广播电台可在长波段收听到。
- The propagation of wave beam in composite random medium 复合随机介质中波束的传播
- I am able to pick you up on the short wave radio. 我能用短波收音机收听到你的信号。
- A wave broke across the surface of the pool. 一个波浪从池水表面掠过。
- He struck the beam with his head. 他的头撞到梁上了。
- I was able to pick you up on the short wave radio. 我能用短波收音机收听到你的信号。
- The beam has a thickness of 3 inches. 这根梁厚3英寸。
- The tidal wave formed a terrifying wall of water. 海啸形成一堵骇人的水墙。
- Never heard of her. You're off the beam. 我从来没有听说过这个人,你搞错了吧。