Overall, barter is a very inefficient means of organizing transactions.总之，易货贸易是一种效率很低的交易形式。The market-place and street were crowded with those who'd come to barter.市场和街道上挤满了前来做物物交换的人。Chickens, goats and rabbits were...
The market-place and street were crowded with those who'd come to barter.市场和街道上挤满了前来做物物交换的人。Chickens,goats and rabbits were offered for barter at the bazaar.在集市上,鸡、山羊和兔子被摆出来作物物交换之用。The market-place and street were c...
我们梦想的实现甚至超越了我们最大胆的估计.This realization of our dreams surpassed even our wildest expectations.20年前, 也就是1968年, 我们失去了这一梦想的两个最有力的声音.Twenty years ago, in 1968, we lost two of the most powerful voices of that dream.现代的武器比从前所梦想的...
结垢是最复杂的问题.The scaling problem is the most challenging.本发明公开了一种蒸发器 防 结垢 防 结晶的方法及其装置.The invention discloses an evaporator anti - scale and anti - crystallization method and device.通过提高水稳药剂的阻垢分散性能来降低水冷器的结垢速率.The fouling ra...
Callus was induced from explants of cassava stem with bud and shootlet.用木薯茎切段及顶芽作为外植体,诱导木薯愈伤组织的形成.The results shew that hypocotyl's velocity, quality and differentiation were better than other explants.结果表明:外植体为胚轴出愈...