Glyoxylic acid was rapidly synthesized by catalytic oxidation of glyoxal with H 2 O 2.在催化剂存在下,用双氧水氧化乙二醛溶液快速合成了乙醛酸.Glyoxal is prepared with waste liquid propellant HNO 3 - 27 S and ethanal.利用报废的液体推进剂硝酸-27S和乙醛制备乙二醛.There a...
You won't see them from the air. They'd be very well camouflaged.你从空中是看不见它们的，它们会被精心伪装起来。They camouflaged in bushes.他们隐蔽在灌木丛中.He has never camouflaged his desire to better himself.他从不掩饰自己的上进心。...
非法套汇的其他行为.Other acts of illegal foreign exchange arbitrage.讨论了避免套汇兑换率矩阵必须是正互反矩阵的结论, 以及给出了兑换率矩阵调整为正互反矩阵的方法.In order to avoid arbitrage, the rate matrix of exchange must be a positive reciprocal matrix.即使套汇交易出现, 也会被一些专业的交易...
Fill small holes with wood filler in a matching colour.用颜色相配的木质填料填平小孔。matching curtains and cushions颜色协调的窗帘与靠垫a pine table with four matching chairs一张松木桌子和四把配套的椅子...
He sported a collarless jacket with pleated black panels.他穿着一件带有黑色褶子饰条的无领上衣。Ji Nuo men wear wide trousers and collarless white coat Duijin.基诺族男子穿宽裤,无领对襟白色外衣.I need a collarless blouse in light green.我要一件淡绿色的无领衬衫....