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- quadrate ring plunger 方形环状活塞
- At the same value of frequency and size, the directivity of quadrate ring piston is sharper than that of quadrate piston. 在同一声波频率以及相同尺寸的情况下，方环活塞声源要比方形活塞声源的远场指向性更尖锐。
- In this paper, the radiation pressure and directional formulation are calculated by use of Reily-integrate, The directivity of radiated sound field of quadrate ring piston is analyzed. 摘要利用瑞丽积分，计算了方环活塞声源远场的辐射声压分布以及指向性公式，并对辐射声压的远场指向性进行了分析；同时，与方形活塞声源的指向性作了对比。
- Radiated sound field of ring plunger 环状活塞换能器辐射声场研究
- She had the sapphire set in a gold ring. 她把那枚蓝宝石镶在金戒指上了。
- The diamond ring dazzled with brilliancy. 这只钻石戒指闪耀夺目。
- She wears a diamond ring on her left hand. 她左手上戴着一枚钻石戒指。
- Our family reunions are always three ring circus. 我家合家团聚的场面总是热闹非凡。
- I am sorry-she's out. Can you ring again later? 对不起－她出去了。你过些时候再打电话来好吗？
- The boys and girls made a ring round us. 男孩和女孩围着我们站了一圈。
- Please ring for the attendant if you need anything. 如果需要什么，请按铃找服务员。
- The music was so loud it made my ears ring. 音乐的声音太大了，把我耳朵震得直响。
- The policeman felt that my story didn't ring true. 警察认为我讲的话听起来不可信。
- She wears a ring round her wrist. 她的手腕上戴着一只镯子。
- What he said did not quadrate with the facts. 他所说的话与事实不一致。
- Ring the correct answer with your pencil. 用铅笔圈出正确的答案。
- He took a photo of the plunger in action. 跳水者正在跳水时, 他拍了张快照。
- A pull on the rope will make the bell ring. 一拉绳子钟就响。
- He have scarcely get home when the telephone ring. 他一回到家电话铃就响了起来。
- I'll ring you up some time during the week. 本周的某个时候我给你打电话。
