板振动对微穿孔板吸声体的 声学 特性存在一定的影响.The panel resonance always affects the absorption characteristics of microperforated - panel ( MPP ) absorber.试验表明,微穿孔板吸声结构可有效地降低排气噪声.Results show that the acoustic system of micro perforation p...
You can get kits to do this from DIY stores.你可以在自己动手商店里买一套工具自己来做这个。There were a couple of decent kits knocking around, but this wasn't one of them!这里有几套像样的装备,但这套不是！Her popular pot holder is also available in do-it-y...
"He went back to the lab", Iris exclaimed impatiently.“他回实验室去了，”艾里斯不耐烦地大声说。The lab has recently been updated to allow for more advanced courses.实验室最近经过更新，可以上更高阶的课程了。Our chemistry teacher often reduces a compound to its c...
You simply can't get a ticket through official channels.通过官方渠道是压根儿搞不到票的.The official number of people carrying the AIDS virus is low.艾滋病病毒携带者的官方数字并不高。A senior White House official said the agreement is close.白宫的一位高级...
这个新信息确实使人们对他们的选择产生了怀疑。This new information does throw doubt on their choice.你或许是个怀疑论者，会把它归因于生活的不公正。You may be a sceptic and put it down to life's inequalities.这让人怀疑其对男性行为的影响。It makes you wonder about the effect on m...
李白是唐代一位才气横溢的诗人.Li Bai was a Tang poet of superb talent.把她风发的意气横溢到她的才智中去了.There was an overflow of strength into her intelligence.他最近在北京出版的《奋斗》 半月刊 上面读过一篇热情横溢的文章.Recently he had read a forceful article in Struggle, a bi -...