When no bubbles come out from the flowline, open the relief valve a little to bleed off slowly. When the pressure gauge reads 0, open the valve completely.是什么意思_When no bubbles come out from the flowline, open the relief valve a little to bleed off slowly. When the pressure gauge reads 0, open the valve completely.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句