分离颗粒常用的装置是惯性冲击器, 旋风分离器, 静电除尘器和过滤器.For particulates, the favored devices are inertial impactors, cyclones, electrostatic precipitators, and filters.风动冲击器是气动冲击回转钻进的主要设备之一.Pneumatic DTH ( Down - The - Hole ) hammer is one o...
昨晚我们套上马车，拉着东西搬到了这里。Last night we hitched the horse to the cart and moved here.大约从1910年起，机动车开始取代马车。Around 1910 motorized carriages were beginning to replace horse-drawn cabs.几架马车仍然在破落的矿村中曲折行进。A few horse-drawn carts still...
Overall a monarch butterfly is no more or less striking than its host, the milkweed pod.大体上,帝王蝴蝶和其宿主奶草豆荚谁也不比谁更显眼或更平庸.Thank you for listening to my Milkweed.感谢听我的歌曲“乳草”.In the spring, surviving monarchs fly north, stoppin...
次货充斥市场.The market was glutted with shoddy goods.次货当然有些毛病.Of course, seconds have some defects.我运气好，在一次大减价时买到的一堆次货中得到了这个。I was lucky to get it as part of a job lot at a sale....