您要查找的是不是：
- plane concave antenna 平凹形天线
- A pyrotechnically pumped Nd glass laser is demonstrated by the use of pyrotechnic flashlamps composed of several chemical materials arranged in a stable plane concave resonator cavity. 通过试验展示了一种烟火泵浦钕玻璃激光器，采用含多种成分的烟火闪光灯作为泵浦光源，谐振腔为稳定的半共焦平凹腔。
- plane concave head on photomultiplier 凹镜窗式光电倍增管
- a plane with a flexible face that can plane concave or convex surfaces. 有可以刨凹面或凸面的曲面的刨子。
- a plane with a flexible face that can plane concave or convex surfaces 有可以刨凹面或凸面的曲面的刨子
- The plane climbed until it was clear of the clouds. 飞机爬升穿出了云层。
- The flier is flying a new-type jet plane on trial. 飞行员正在驾驶一架新式喷气机作试验飞行。
- Study of the scattering field in the caustic region of a two-dimensional concave antenna based on symplectic geometrical theory 基于辛几何理论的二维凹面天线焦散区散射场
- The landscape unrolled under the speeding plane. 大自然的景色展现在快速飞行的飞机之下。
- His figure looks very funny in the concave mirror. 他的样子在凹镜里显得非常可笑。
- Mary would rather travel by train than by plane. 玛丽宁可乘火车而不愿乘飞机旅行。
- An indented or concave surface or area. 凹陷，洼地凹的表面或地区
- The plane stop over in Lyons on the way to Paris. 这架去巴黎的飞机在里昂中途停留。
- Reception improved because of the new antenna. 接受效果因有新天线而得到改善。
- Are you going to America by boat or by plane? 你到美国是坐船还是坐飞机？
- The plane taxied along the tarmac. 飞机沿跑道滑行。
- At the news of the plane crash she turned pale. 听到飞机失事的消息她的脸都吓白了。
- John is repairing his model plane at his leisure. 约翰不慌不忙地修理着他的航模。
- The plane homed in on the radio beacon. 飞机遵循导航台信号降落。
- A plane is gone to order from France. 从法国去订购一架飞机。
