它们还分泌蜡质的透明物质,称作角质.They also secrete a waxy, transparent substance called cutin.里边是一种绿色的软膏, 有蜡质的光泽, 气味浓郁,而且经久不散.Inside was a green paste, waxy in lustre, the odour curiously heavy and persistent.有些蚜虫,看来喜欢有蜡质的叶片, 而这种叶片对另一些...
Some shop assistants are frosty in manner repelling customers from a distance.有些售货员态度冷若冰霜,拒人千里之外.On the Taihu Lake, mists and waves stretch far into the distance.太湖之上, 烟波浩淼.How do you find an acceptable balance between c...
...the 100 metres backstroke.100米仰泳比赛Sometimes I use breaststroke, backstroke, and free style.有时游蛙泳 、 仰泳和自由泳.I get water in my ears when swimming the backstroke.仰泳时,我耳朵总是进水.Peter : Tedhere are freestyle, backstroke, butt...
采购产品书桌配件, 钢笔和书写工具, 圆珠笔钢笔, 引导电笔, 多功能钢笔.Desk Accessories, Pens and Writing Instruments, Ballpoint Pens, Led Light Pens, Multifunctional Pens.本文针对当前发展的要求,采用微小角度检测原理,提出了一种多参数签名鉴定电笔.This paper presents an electrical pen for s...
这个脱羧作用是由谷氨酸脱羧酶催化的.This decarboxylation is catalysed by the enzyme glutamic acid decarboxylase.生物化学家们应用动力学研究酶催化反应的速率.Biochemists use kinetics to study rates of enzyme - catalyzed reactions.这种酶催化琥珀酸的氧化.This enzyme catalyze...