None of the water from Lake Powell is used to irrigate the area.鲍威尔湖的水一滴都没有用于灌溉该地区。They have built canals to irrigate the desert.他们建造成水渠以灌溉沙漠.They are already discovering how to colonise Venus and to irrigate the moon.他们...
Lewis is matched against the WBO's heavyweight champion, Tommy Morrison.刘易斯对决世界拳击组织的重量级拳王汤米·莫里森。In some perverse way the ill-matched partners do actually need each other.奇怪的是，那些不相配的伴侣实际上却彼此需要。They must choose betwee...
The Y - eccentrically braced steel frame has excellent seismic resistance and energy - dissipation.型偏心支撑钢框架具有很好的抗震耗能能力.One might expect azomethane to have a Y structure similar to that of acetone ( CH 3 ) 2 CO.可以预期偶氮甲烷分子...
Initiation is caused by radicals produced from azobisisobutyronitrile, benzoyl peroxide or perester decomposition.链引发是由偶氮二异丁腈, 过氧化苯甲酰或过氧酯分解生成的自由基所引起.PET fibres were grafted acrylonitrile ( AN ) initiated by benzoyl perox...