短语词组短语orifice e size 喷嘴直径decay orifice size 衰减孔尺寸orifice size calculation 孔径计算orifice size on the burner 喷燃器孔径Size Orifice 阀孔径Wrong Size Chemical Orifice 化学制品注孔尺寸不正确 返回 orifice size