Formaldehyde is used as one of basic raw materials in syntheses of synthetic tannins.摘要甲醛通常是用于合成鞣剂制备的一种基本原材料.The chemistry of cyclopentadiene organometallic complexes including the syntheses properties and applications a...
His syntheses are okay, but we don't get those spectacular yields he claims.他的综合是对的, 但是我们得不出他所宣称的那种引人注目的结果.The syntheses, properties and applications of benzocyclobutene monomer and polymers are introduced.本文介绍了苯并环丁...
天文学家能够测定每颗恒星的亮度。An astronomer can determine the brightness of each star.这颗恒星的表面温度估计在零下75摄氏度左右。The star's surface temperature is reckoned to be minus 75 degrees Celsius.这些恒星一定是形成于100到150亿年前。The stars must have formed...
Tampering with a single enzyme can lead to untoward effects elsewhere.破坏一种酶可能会导致在别处出现异常。Untoward circumstances prevent me from being with you on this festive occasion.有些不幸的事件使我不能在这欢庆的时刻和你在一起.An inkling of untoward deeds ...