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- The high frequency pulse 50-100/sec is known as dense wave, the low frequency pulse 2-5/sec termed as rarefaction wave. 频率快的叫密波(高频),一般在50-100次/秒,频率慢的叫疏波(低频),一般在2-5次/秒。
- It provides an alternation of rarefaction wave and dense wave, each wave lasting for one and a half second. 是疏波、密波自动交替出现的一种波形。
- dense wave division multiplexing ( DWDM ) 密集波分复用
- He thinks of new york as a den of iniquity. 他认为纽约是个藏污纳垢之处。
- Study on Dense Wave Division Multiplex Optical Transmitter 密集波分复用光发射机的研究
- He has made his house a den of thieves. 他把自己的家变成了一个贼窝。
- The bears den up together during the winter. 冬天熊一起在洞穴里冬眠。
- He thought of New York as a den of iniquity. 他认为纽约是个藏污纳垢之处。
- The liner ran down a fishing-boat during the dense fog. 班轮在浓雾中撞沉了一只渔船。
- The bar in the slum is a den of iniquity. 这个贫民窟里的小酒吧是一个充满罪恶的场所。
- Traffic was interrupted by a dense fog. 交通因浓雾而受阻。
- The lips of the wise disperse knowledge. 智者之口传播知识。
- The police tracked the thieves to their den. 警察跟踪小偷,直到他们的老窝。
- They hewed their way through the dense jungle. 他们在浓密的丛林里开辟出一条路来。
- 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。
- I can't see anything in this dense mist. 这样的浓雾里,我什么也看不见。
- He is so dense he'll never amount to anything. 他十分愚钝,决不会有出息。
- 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。
- Traffic slowed down because of the dense fog. 因浓雾车辆减速行驶。