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...
This kind of facial cleanser can constringe and clean the pores of face.此款洗面奶能够收敛及清洁毛孔。Constringe pore, restrain skin and get rid of the scars of acne.有效控制油脂分泌,收缩扩大的毛孔,改善皮肤质感,并具减少黑头 、 刺、止暗疮留印等功效,令肌肤光泽无暇....
Horsehead Nebula: New stars have already formed inside part of it.马头星云: 新的?星已经在其内部形成了.Directly below Alnitak, a close inspection will reveal the Horsehead Nebula.经过仔细查看就可以发现紧挨着参宿一的下方就是马头星云.Light takes about 1500 years to...
沿湖边,一把把红色雨伞像花似的撑开.Red umbrellas blossomed out along the lake.他象朵花似的盛开而后枯萎, 象影子似的漂浮不定.Like a flower he blossoms and then withers; like a shadow he flees and never stays....