Calculate weight of wire paid out, buoyancy from submerged cargo.
重量计算出丝支付，从水下浮力的货物。
2
This is the submerged arc welding, a commonly used welding method that can in an hour deposit weld metal equal in weight to that of the operator himself.
这是埋弧焊，一种常用的焊接方法，它在一小时内熔敷的金属量可以等于操作者本身的重量。
3
The upward buoyant force on an object partially or wholly submerged in a fluid is equal to the weight of the displaced fluid.