the development of in vitro fertilization体外受精的研究发展The sex of the embryo is predetermined at fertilization.胚胎的性别早在受精时就决定了。They damage female strobili during the interval between pollination and fertilization.在传粉与受精的间隔期间,他...
They damage female strobili during the interval between pollination and fertilization.在传粉与受精的间隔期间,他们毁坏了雌球花.Annuals, as a general rule , are very responsive to phosphorus fertilization.通常说来,对一年生植物施用磷肥是相当有效的.Gametes may de...
它减少了气锁的机会.This reduces the chance of vapour lock.基本装置: 气锁的回转阀,低压大风量机.Basic device: An air - lock rotary valve and a high - volume and low pressure blower.膨胀节是防泄漏的,带有疏水,且与相连的设备之间具有气锁密封性.Expansion joints are leak proof and...
这所学校是专门为那些因患病而导致学业中断的孩子们开办的。The school is specially for children whose schooling has been disrupted by illness.我哥哥常因患病而缺勤.My brother is often absent from work because of illness....