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...
...a telephone hotline for gardeners seeking advice...为园艺爱好者提供咨询的电话热线Are you able to keep both the gardeners on?你还能继续雇用这两名花匠 吗 ?She has to employ two gardeners to look after that huge garden.她要雇两个园丁来照料这个大花园.Gardeners cla...
This hard work has drained away my keenness.这种艰苦的工作削弱了我的锐气.Mischievous little beggars they are, both of them, but talk about keenness!这俩小家伙淘得要命, 可显起积极呀, 嘿!A few weeks'hsrd work should damp down his keenness.几星期的艰苦工作...
Chinese herbal medicines have Notopterygium, Gentiana, such as rhubarb.中药材有羌活 、 秦艽 、 大黄等.In recent years, Gentiana spot blight is the most important disease of Chinese herbal medicines gentian.龙胆草斑枯病是近几年中药材龙胆草的最主要病害.Chin...
His cunning and guile were not attributes I would ever underestimate.我从未对他的狡猾和奸诈掉以轻心。He is full of guile.他非常狡诈.I love children's innocence and lack of guile.我喜欢孩子的天真无邪。...
将面粉和发酵粉筛入中等大小的搅拌碗中。Sift the flour and baking powder into a medium-sized mixing bowl.能在肠胃里迅速发酵的食物是绝佳的天然通便剂。Foods that ferment quickly in the stomach are excellent natural laxatives.让面包发酵到刚好是原来的两倍左右。Allow the loaves to ris...
I use the short-wave radio to get the latest war news.我用短波收音机收听最新的战事新闻。Featured are both his classics and his latest creations.他的经典作品和最新创作都很独特。The latest opinion polls are predicting a very close contest.最近的民意测验预测竞争将会非常激...
If your child's temperature rises, sponge her down gently with tepid water.如果你孩子的体温上升，就用海绵蘸上温水轻轻地擦拭她的身体。Fill a bowl with water and gently sponge your face and body.在一只盆里放上水，轻轻地用蘸湿的海绵擦拭你的面部及身体。Cover the base with a s...