版权是文艺复兴的副产物.Copyright was a by - product of the Renaissance.以工业副产物木素磺酸和焦油酚为主要原料研制出一种新的合成鞣剂.A new syntan product prepared with tar phenol and lignin sulfonic acid.还有二恶英, 纸生产和废物燃烧的副产物.There's also dioxin, a byproduct ...
One end of the windpipe is connected with a unidirectional inflating valve.气管的一端与单向充气阀连接.Experiment materials: jar , windpipe, limewater, flume and the experiment record chart for each group.学生用材料: 广口瓶 、 导气管 、 石灰水、火柴、集气瓶...
Goldsmith has repaired the roof to ensure the house is wind-proof.戈德史密斯修理了屋顶,以确保房屋能够抗风。The much repaired plane was crated for the return journey.经过大修的刨子被装入木箱运回去。Racing was halted for an hour while the track was repaired....