沥青，煤焦油，高温。
Development of solar high temp. application technology.
开发太阳能中高温热利用技术。
Its advantage is high resistance to high temp., corrosion and ageing.
它具有耐高温、耐腐蚀、耐老化的优点。
High control accuracy of temp. Manual control of rinsing time.
温度浓度手动控制；清洗时间清洗效果人工控制。
High control accuracy of temp. Manual control of rinsing time.
温度浓度手动控制；清洗时间清洗效果人工控制。
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