Selecting parents with medium genetic distance may probably gain stronger heterosis.在亲本选配时,应选择遗传距离中等偏大的材料.He made splendid achievements in starting and promoting the use of hybrid heterosis.他在水稻杂交优势利用的开创和发展方面成就卓越....
索性用那涂了蜡似的、角质的小红嘴,“嗒嗒”啄着我颤动的笔尖.It would even peck my bobbing nib with its waxy red bill.制造合成角质的层试,导致了赛璐珞的产生.Celluloid resulted from efforts to produce a synthetic horn....
A spokeswoman for Mr Prescott yesterday made it clear that he had been unhappy at his exclusion.普雷斯科特先生的发言人昨天表明他对于自己被拒绝十分不满。A spokeswoman said the agreement had been declared null and void.女发言人称该协议已宣布无效。A United Nations ...
This article introduces and exports of leatheret industry and the situation of the related industries.阐述了我国人造革、合成革行业发展现状及发展特点,提出了中国人造革、合成革行业的工作重点及发展方向....
一种棘齿装置把线从线轴转到梭心上。A ratchet mechanism transfers the thread from spool to bobbin.操作杆进一步弯曲，线轴发出刺耳的吱吱声。The rod bent double, the reel shrieked and ratcheted.它的穿线过程很复杂,要用三个线轴.It has an elaborate threading process that uses thr...
He had spent several uproarious evenings at the Embassy Club.他在使馆俱乐部度过了几个狂欢夜。This utterance of his was greeted with bursts of uproarious laughter.他的讲话引起阵阵哄然大笑.The noise of talk and laughter was uproarious.说笑声很吵人。...