其中最明显的是鲜艳的花瓣,花瓣下有一轮萼片.Most obvious of these are the brightly colored petals supported by a whorl of sepals.果扁球形, 直径1.7厘米, 基部托以宿存苞片和萼片.Fruit oblate, 1.7 cm in diameter, base with persistent bracts and sepals.花朵下面的萼片枯萎了.Th...
Situations of preparing isocyanate trimers at home and abroad are mainly introduced.主要介绍国内外异氰酸酯三聚体的制备状况.Polyether - type isocyanate prepolymers are prepared with polyether polyols and tolylene diisocyanate.采用聚醚多元醇和甲苯二异氰酸...
His body slowly undulated in time to the music.他的身体随着音乐的节拍慢慢摆动。The sail undulated gently in the breeze.帆在微风中缓慢地波动.The ripe wheat undulated in the Breeze like the incoming tide.成熟的小麦象潮水般随风起伏....
她的目光越过克里斯蒂娜盯着床。She stared past Christine at the bed.非同卵双生子是两个受精卵同时在子宫内着床的结果。Non-identical twins are the result of two fertilised eggs implanting in the uterus at the same time.我摸索着走进那间黑乎乎的屋子里,笨手笨脚地摸着床.I groped into the d...