在理論上,無阻尼時(shí)將引起無盡的諧振響應(yīng).Theoretically the absence of damping results in an infinite response at resonance.燃燒室內(nèi)的固體顆粒可能引起強(qiáng)烈的阻尼效應(yīng).Strong damping effects are possible because of solid particles in the chamber.阻尼網(wǎng)的阻力損耗在幾乎所有的裝置中都是...
Although disabled by polio during the Second World War, Proctor was also a first-rate helmsman.二戰(zhàn)期間盡管身患小兒麻痹癥，普羅克特仍不失為一流的舵手。The old helmsman brought us about and we avoided a dangerous dash against the rocks.老舵手掉轉(zhuǎn)了船的航向, 我...
英屬維爾京群島(The British Virgin Islands)，位于大西洋和加勒比海之間，加勒比海背風(fēng)群島的北端。面積153平方公里。人口1。98萬(2000年估計(jì))。主要是黑人。通用英語。多數(shù)人信奉基督教。1672年被英國兼并。1872年成為英國殖民地背風(fēng)群島的一部分，受背風(fēng)群島總督管轄至1960年。首府羅德城(Road Town)...
The odds against him surviving are incredible.他活下來的概率非常小。The London Gazette, the oldest surviving journal, is first published.1665年的今天, 現(xiàn)存最古老的一份期刊 —— 《倫敦公報(bào)》首次出版發(fā)行.The chances of his surviving are pretty remote.他生還的機(jī)會(huì)非常渺茫...
Callose stains are aniline blue, resorcin blue and rosolic acid.胼胝質(zhì)的染劑是苯胺藍(lán), 間苯二酚藍(lán)和玫紅酸.Hypersensitive reaction and callose formation were two important resistance mechanisms.過敏性壞死反應(yīng)和胼胝質(zhì)的形成是2個(gè)重要的抗銹機(jī)制....