The scientists are able to calculate accurately when the spaceship will reach the moon.
科学家能准确地计算出太空船什么时候抵达月球。
On this method, disk roller's contact stress is obtained and the intensity is verficated. It is difficult to calculate accurately the wheel pressure distributing.
常用的链轮闸门轮压计算方法中的平均轮压法的超载系数的确定存在较大的随意性,因此用这种方法计算轮压分布是不合理的。
It is difficult to calculate accurately the minimum water depth for anchor gear to be braked effectively in weight dropping mode by Newton classical mechanical law.
船舶抛锚过程中锚机刹车最小临界水深的准确计算一直是海船船长关注的问题。
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