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...
我开车开了好一阵穿过这片可怕的空旷之地。I drove for a while across this fearsome emptiness.这附近略显阴冷空旷。It's a bit chilly and empty hereabouts.一种不自然的寂静和空旷笼罩着.An unnatural silence and desertion reigned there....
Glazes had been used from ancient times in Egypt.埃及自古代起就使用釉料.Especially indicated for glazes which contain lead and boron.尤其适用于含铅、含硼的釉药.It'serves as a red colorant for glass and glazes.还用作玻璃和釉面的着色剂....
另两个为胸腺嘧啶和胞嘧啶, 即称为嘧啶的单环结构.The other two, thymine and cytosine, are single ring structures called pyrimidines.嘌呤为嘧啶取代或嘧啶为嘌呤所取代,叫做颠换.The substitution of a purine for a pyrimidine, or vice versa is a transversion.本文研究氟脲嘧啶(5—...
She resolved that, if Mimi forgot this promise, she would remind her.她决定，如果米米忘记了这个承诺，她就提醒她。Only Mimi's intimates were admitted to her boudoir.只有米米的密友才被允许进入她的闺房。Mimi had gotten over her pique at Susan's refusal ...
Begonias are prized equally for their flower as well as their showy leaves.海棠花之所以得到很高的赞赏也有它漂亮叶子的功劳.A flock of sheep had got into the garden and trampled down his begonias.一群羊闯进了花园,踩倒了他的秋海棠.Begonias, geraniums and clods o...
It was unbelievably dramatic as lightning crackled all round the van.闪电在货车周围炸开时，情景异常壮观。He beamed: "Unbelievably, we have now made it to the final twice."他开心地笑了：“真是不可思议，我们现在已经两次成功打进决赛了。”"You're unbelievably lucky."— ...