With variations of gravity the weight rises or falls. 荷重隨著(zhù)重力的變化而升起或降落。
Dead weight loading simulating that of the bolts was applied at the bolt holes through the agency of steel balls and buttons. 螺栓荷載是用死荷重來(lái)模擬的，以鋼球和壓鈕作為代用件，通過(guò)它們將此荷載施加于螺栓孔。
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