Less common reagents that attack polymers include acids, bases.比较不常见的浸蚀多聚物的化学浸蚀物有酸 、 碱.They experimented with new reagents and succeeded.他们用新试剂做了试验,获得了成功.Warm your reagents ( media, PBS, trypsin ) to 25 - 37� � C prior t...
The motivation of sperm donors varies.捐精者的动机各不相同.Squid beaks are often found in the stomachs of sperm whales.经常能在抹香鲸的胃里发现鱿鱼的嘴.The length of a sperm whale's tooth is 20 cm.长度的一抹香鲸的牙齿是20厘米....