Years ago, to 'hedge' against a potential drop in prices, a number of gold-mining companies agreed to sell much of their future production.
多年前，为了“对冲”金价下跌的可能性，众多金矿公司同意预售大量未来将开采的黄金。
The results showed that the activation of sodium sulfide to the smithsonite due to the HS- ion adsorbed on the smithsonite's surface and lead to the zeta potential drop.
结果表明，硫化钠对菱锌矿的活化作用主要通过HS-吸附在菱锌矿表面，降低菱锌矿表面电位实现；
In this paper, the validity of DC potential drop method applied to notch problem has been investigated by means of analytical method, finite element analysis, and experimental method.
本文从解析法、有限元分析和试验三方面探讨了直流电位法用于缺口问题的有效性。
In this paper, the validity of DC potential drop method applied to notch problem has been investigated by means of analytical method, finite element analysis, and experimental method.
本文从解析法、有限元分析和试验三方面探讨了直流电位法用于缺口问题的有效性。
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