常見例句雙語例句Finally the influence of pretension force to bolt fatigue life is studied and the method that extends the bolt life is proposed.并研究了螺栓預(yù)緊力對螺栓疲勞壽命的影響，提出了延長螺栓壽命的方法。The principle of the hydraulic pretension is analyzed, the calculation of bolt elongation and pretightening force is also given.分析了液壓拉伸預(yù)緊的工作原理，并給出了螺栓伸長量和預(yù)緊力的確定方法。The optimum design for pretensioned structures considering both the pretension force variables and the size variables was discussed.探討了以預(yù)張力和截面尺寸為設(shè)計變量的預(yù)張力結(jié)構(gòu)優(yōu)化設(shè)計問題。 返回 pretension force