代替方案 meaning in English

alternative courses
backup

Regarding the second assumption, a number of alternative hypotheses have been advanced .
关于第二个假设，曾经提出过很多其它代替方案。
If the first plan doesn ' t work , we ' ll have to carry out the alternative one
如果第一计划行不通，我们将不得不执行代替方案。
Using path may provide a simpler alternative to queries written using the explicit directive
使用path可能为使用explicit指令所编写的查询提供更简单的代替方案。
So it is reasonable that mode 1 substituting for mode 4 is compared with mode 3 to study the influence on response , and seismic behavior of the mega steel structures from the hypo - frame
由此可见，我们有理由采用计算方案1代替方案4与方案3比较来研究次框架对巨型钢框架结构反应和抗震性能的影响。