prefilming meaning in English

预膜

Technology - technical code for on line chemical cleaning and prefilming under the load of heat of recirculating cooling water system
循环冷却水系统不停车化学清洗和热态预膜工艺技术规程
Industrial circulating cooling water - determination of zinc for phosphorus - zinc prefilming fluid - atomic absorption spectrometric method
工业循环冷却水用磷锌预膜液中锌含量的测定原子吸收光谱法
Industrial circulating cooling water - determination of calcium for phosphorus - zinc prefilming fluid - atomic absorption spectrometric method
工业循环冷却水用磷锌预膜液中钙含量的测定原子吸收光谱法