這種反應構成了制備芳基環丙基乙炔的有效方法.This sequence constitutes an efficient method for preparing arylcyclopropylacetylenes.通過選擇性氧化,將水溶性優良的羥丙基β環糊精轉化為丙酮基羥丙基β環糊精.Water soluble hydroxypropyl ? ? cyclodextrin was converted to acetonyl hydro...
當你從內心深處找到一種可以忍受一切痛苦的堅強力量時，你的成長歷程就會出現飛躍。The turning point in the process of growing up is when you discover the core of strength within you that survives all hurt.這是認識過程的一次大飛躍.It is a big leap in the process of cognition....
Cattle should be killed cleanly and humanely.牛應該被干凈利落地無痛屠宰。Manufacturers are working with new fuels to find one that burns more cleanly than petrol.制造商們正在研制新型燃料，以找到一種比汽油更清潔的燃料。...wax strips which remove hairs cleanly fro...