Throttles dense solutions of paper mill stock for headbox flow control, etc.用于压头箱流体控制的造纸厂原料的稠密流体节流, 等等.Originally, headboxes were open to the atmosphere ( open headbox ) .通常, 开放式头箱与大气 相通.D . three seconds after injection...

压头箱...

headbox的音标：headbox的英式发音音标为：['hedbɒks]headbox的美式发音音标为：['hedbɒks]...