短语词组短语molten slag pool 渣池molten weld pool 焊接熔池molten pool stirring 熔池搅拌Molten pool level 熔池液位boiling g molten pool 沸腾状溶池dimension of molten pool 熔池尺寸cooking food molten pool 沸腾状熔池Molten Pool Flow 熔池流动 返回 molten pool