expanded ratio meaning in English

膨胀倍数

When propellant is used in weapons with larger gas expanding ratio , the power capability accords with potential energy , and the power capability accords with impetus when gas expanding ratio is small
发射药在气体膨胀比大的武器上应用时，做功能力与潜能较为一致；在气体膨胀比小的武器上应用时，做功能力与火药力较为一致。
The results from simulation agree well with the conclusions of conference [ 21 ] , and indicate that the boundary conditions have no obvious effect on the displacement and stress ; that the displacement and stress increase with linear heat expanding ratio , and those decrease with the specific heat of material ; that the displacement increases with the heat transfer ratio , but the stress does not
数值模拟表明：边界条件对位移和应力的影响非常小；位移随着线热膨胀系数、热传导系数的增大而增大，但是随着比热容的增大而减小；应力的最大值随着线热膨胀系数的增大而增大，而随着比热容的增大而减小，而热传导系数k对应力的影响比较小。