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- Methods Male and female adult whole bodies of Periplaneta Americana were extracted in the Coca's solution after defatting. Sequential purification of two steps including DEAE-cellulose 52 ion exchange chromatography and Hiprep Sephacryl? 方法 美洲大蠊全虫经脱脂、Coca’s液处理得到其粗浸液，然后通过DEAE-52离子交换层析、Hiprep Sephacryl?
- Ay, get it right, two step and let your shou[...... 您浏览了太多的页面，所以您无法看到该页的内容...
- One step, two steps, tickled under there! 然后一步步走上手臂，再到腋下搔痒!
- Purer Acetylcholinesterase was obtained through salting out by ammonium sulphate and ion exchanging. 分别采用鸡蛋膜固定化法，活化载体－共价结合法和戊二醛交联法进行酶的固定。
- In fact the clean and jerk consist of two steps. 挺举实际上包括两个步骤。
- Amberlyst A-21, macroreticular ion exchange resi... 阿尔伯特A-21离子交换树脂弱碱型；
- The two steps cannot be confused. 这两个步骤不能搞混了。
- The new process to separate lactic acid from fermentative liquid through film ultrafiltering and ion exchanging is introduced. 介绍了采用膜分离与离子交换相结合分离乳酸的新工艺。
- We must take one step back in order to take two steps forward. 退一步才能进两步。
- He tore up the stairs two steps at a time. 他一步两个台阶地飞奔跑上楼。
- Complete demineralization is achieved by ion exchange. 用离子交换可以获得彻底的脱盐效果。
- Delivery can be accomplished in two steps, or in a single step. 提交可以分两步完成,或者是在一个单独步骤中完成。
- Signing code happens in two steps. 对代码进行签名的过程包含两个步骤。
- Waste treatment by ion exchange produces a reusable water. 用离子交换处理废水可产生回用水。
- Why are there two steps to signing? 为什么需要用两步来进行签名呢?
- To turn around and I'll be two steps behind. 你会惊喜的发现我就在你身后两步默默注视着你。
- The design procedure is divided in to two steps. 设计过程分为两步。
- With hydrogen sulfide and tetrapropylene as raw materials, TDM was synthetized by the one step process in the presence of acidic ion exchange resin. 摘要 以硫化氢和十二烯为反应原料，以酸性离子交换树脂为催化剂一步合成叔十二碳硫醇。
- He took two steps and then he turned around. 其实意思很简单,就是他走两步然后转过身。
- There are two steps up onto the bus. 上公共汽车有两级踏板。
