左右两侧的两个大孔,分别表示进气阀孔和排气阀孔.The large holes on the left and right represent the inlet and exhausting valve ports respectively.结果: LSA-5B型大孔吸附树脂对莲心生物碱具有较大吸附量.Result: The LSA - 5 B macroporous adsorption resin prolided the opt...
I picked first all the people who usually were left till last.我先挑出了所有通常留到最后的人。Lou prattled on about various trivialities till I wanted to scream.卢就各种芝麻小事唠叨个没完，后来我烦得都想尖叫了。He checked the register. There was money in the ti...