A long placard bore the names of all the new recruits.长长一张布告上写着全部新兵的名字.If you'll reverse the placard you'll see what I mean.你若把那张海报翻过来,你就知道我的意思了.A placard was posted up without any signature , accusing a number...
A placard was posted up without any signature , accusing a number of people by name.有人张贴了一张匿名榜, 指名控告了许多人.an advertising placard广告招贴If you'll reverse the placard you'll see what I mean.你若把那张海报翻过来,你就知道我的意思了.A lon...
Antioxidant tertiary butyl hydroquinone was prepared by hydroquinone and tertiary butyl alcohol.由对苯二酚与叔丁醇反应制得抗氧化剂叔丁基对苯二酚.They were good catalyst for synthesis of n - butyl cinnamate.它们是催化合成肉桂酸正丁酯的良好催化剂.A method of synthe...