The hydrogenation of terpineol to dihydroterpineol catalyzed by Raney Nickel modified by potassium borohydride was studied.研究了以硼氢化钾修饰的雷尼镍催化剂催化松油醇加氢制备二氢松油醇的反应....
Symptoms of anaemia include weakness, fatigue and iron deficiency.贫血的症状包括虚弱、疲劳和缺铁。They did blood tests on him for signs of vitamin deficiency.他们给他验了血，以检查是否有维生素缺乏的迹象。AIDS stands for Acquired Immune Deficiency Syndrome.AID...
After-sun products will cool and hydrate your skin.晒后护肤品会清凉肌肤并为其补水。Chloral hydrate is a rapidly effective hypnotic.水合氯醛为一种作用迅速的催眠药.Gas hydrate is an important potential resource in the 21 st century.摘要天然气水合物甲烷资源量的估算是天然气水...
头顶上，直升机在呼啸，巨大的螺旋桨叶片搅动着空气。Overhead, the chopper roared and the big blades churned the air.直升机的旋翼叶片rotor blades on a helicopter推进器的叶片已经安装好了.The propeller blade has been mounted....
The holes were sufficiently large to serve as nests.这些洞作鸟巢足够大。We found that birch bark could serve as paper.我们发现桦树皮可以作纸用.Such stories serve as a spur to children's imagination.这类故事能激发儿童的想像力....
The method of deducing Pythagorean Triples ( irreducible and reducible ) is explained.并说明了互素勾 股数 组的导出方法....the irreducible complexity of human life.人的生活本就复杂，难以简化to cut staff to an irreducible minimum把职员减少到最低限度Expenditure...
Reiner, 56, has all but conceded the race to his rival.56岁的赖纳在比赛中几乎已经向对手认输了。This movie is a sequel to The Graduate , and is directed by Rob Reiner.本片由劳勃?雷纳执导, 是《华业生》续集.Antibiotics may be necessary join and chymotrypsin t...