Speculation involved forecasting the psychology of the market, enterprise the prospective yield of assets over their whole life. 投机需要预测市场心理,投资则需要在整个寿命周期预测资产收益率。
There is, however, a reference after the chapter on "the marginal efficiency of capital", which is roughly speaking the prospective yield of new investment after taking into account interest payments. 但在“资本边际效率”(themarginalefficiencyofcapital)这一章后面的一条引文中,粗略地提到了考虑到利息支付之后,新投资的预期收益率。
It was pointed out that the latter was the most prospective one to produce propylene oxide, but the low yield of propylene oxide was the main problem of the method, and the improvement of the catalyst synthesis was the key to its industrialization. 指出氢气、氧气、丙烯原位合成环氧丙烷工艺是最具前景的合成方法,但该方法的环氧丙烷收率较低,而改善催化剂合成技术是此方法实现工业化的关键。