环烯烃共聚物的自然形态,类似玻璃.COC transparency similar to glass in its natural form.典型环烯烃共聚物材料,比高密度聚乙烯和聚丙烯模量较高.Typical COC material will have a higher modulus than HDPE and PP.报道了在低温条件下, 以邻二酮和α-环烯酮为原料与炔钠反应,合成了2,3, 4,5-四甲基-1-乙炔基-2-烯-环...
“亲”的英语可以翻译为：parent，relative，marriage，matchrelated by blood，next of kin，close，intimate（亲自） in person，personally，亲临指导 come personally to give guidancekiss，be close to，pro- ...
Joan still mourns her father...琼仍在为父亲的死伤心。And Joab was told: The king now weeps and mourns for Absalom.1有人告诉约押说,看哪,王为押沙龙哭泣悲哀.The new wine mourns, The vine decays , All the merry - hearted sigh.赛24:7新酒悲哀 、 萄树衰残、中欢乐的 、 都叹息...
遇到稀碱就容易环化.Cyclization occurs readily with dilute alkali.以柠檬桉叶油为主要原料经环化、催化氢化二步反应得到薄荷醇.Menthol was obtained from lemon eucalyptus oil via cyclization and catalytic hydrogenation.综述了二碘化钐在分子内环化反应中的应用.Application of samarium ...
The raucous sirens of the tugs came in from the river.河上传来拖轮发出的沙哑的汽笛声.As I near the North Tower, the wind tugs at my role.当我接近北塔的时候, 风牵动着我的平衡杆.Tugs were sent to the damaged oil tankers.拖船被派去拉损坏了的油船....