厚橡膠墊

风机抗震

风力发电机组结构抗震计算程序,根据风机的塔筒高度、质量及塔顶叶轮和机舱质量,估算风机基本自振周期。然后基于修正的底部剪力法计算风机底部剪力和弯矩,具有较好的精度。该方法的优点是只需要很少的输入参数,能够快速计算风机的地震作用,精度能够满足工程要求。免費玩风机抗震 APP玩免費免費玩风机抗震 App风...

mm Ruler

It is the ruler that can be measured in millimeters.Did not have to trouble is that there is no measure to when you want to measure the length of the ...

CookieCat

★ Cute! Exciting! ★ ★ Exciting back-to-back combos !! ★ [ Player reviews ] it's a nice game!!! \(**)/ Cute !!! I love it muito bom, beem viciante, ado...