... 前导反应物 leading reactant; 前导轨former rail; 前导黑子 {天} leading sunspot; preceding spot; preceding sunspot; p-spot; ...
双语例句
1
The rail, sleeper and beam have distinct relative displacement. In the former mechanics model, the influence of the displacement of the sleeper is not taken into account.
以往对钢轨、轨枕及梁跨结构三者之间产生相对位移的计算模型，没有考虑轨枕位移的影响。
2
The structure of diversion rail cylinder former, the major design parameters and application effect were discussed.