n.友好

親善.

Study on Making Lignin-quaternary Amic Salt Flocculant from Lignin. 利用木質(zhì)素制備木素季胺鹽絮凝劑

The poly (amic acid) exhibited good solubility in common organic solvents. 該聚酰胺酸在普通有機(jī)溶劑中具有良好的可溶性.

Synthesize poly(amic acid) by s-BPDA and 4,4'-ODA at 1:1(mol ratio ) in DMAC. 本論文中我們合成了苯胺齊聚物-聚酰亞胺梯度漸變的膜材料，并對其進(jìn)行了表征：（1）以DMAC為溶劑，以摩爾比為1：1的s-BPDA和4,4’-ODA合成聚酰胺酸。

A dyn amic fuzzy evaluation model is created,which is based on a discrete MARKOV process and fuzzy set theory. 利用馬爾柯夫鏈和模糊集理論,建立多指標(biāo)動(dòng)態(tài)模糊評價(jià)模型。

The W.H.O. says about one and one-half thousands millon dollars will be needed over three years to prepare for append amic a pandemic . 世界衛(wèi)生組織說在三年里為一個(gè)傳染病準(zhǔn)備的大約需要1500億美元.

In dynamic experiment, a series of dyn amic caustic patterns surrounding the crack tip and fracture path are recorded. 在動(dòng)態(tài)實(shí)驗(yàn)中,記錄了裂紋擴(kuò)展的過程和在此過程中不同時(shí)刻的焦散斑和裂紋擴(kuò)展的路線。