例句與造句

1. Pdmaema can be cross - linked by quaternization to develop a positively charged dense network structure . according this mechanism , pdmaema / psf positively charged nanofiltration membrane was developed by interfacial polymerization using psf plate macrofiltration membrane as support layer , pre - polymer of pdmaema water solution as coating solution , p - xylylene dichloride / heptane as cross - linking agent
   根據(jù)這一機(jī)理，以psf平板微孔膜為基膜， pdmaema預(yù)聚物水溶液為涂層液，以對(duì)二氯芐正庚烷溶液為交聯(lián)劑，采用界面聚合法制備了pdmaema psf荷正電復(fù)合納濾膜。
2. It's difficult to find p-xylylene in a sentence. 用p-xylylene造句挺難的