The construction and operation principle of a long melting life water-cooled cupola was described.
介绍长龄水冷冲天炉的结构及工作原理，分析风眼漏水和炉体挂渣的原因。
The all test system works well in the actual operation, which has been successful used as the evaluating detergency test for TC-W3 grade water-cooled two-stroke gasoline engine oils.
实际评定试验中整套装置运行稳定、可靠，已成功用于TC - W3高档水冷二冲程汽油机油的清净性评定。
Three design models of the cold-source of central air conditioning systems are discussed: regular water cooled chiller operation, partial cold-storage operation, and full cold-storage operation.
讨论了中央空调系统冷源的三种配置模型，设计了常规冷水机组运行、部分蓄冷运行和全部蓄冷运行的方案，分析了部分蓄冷运行和全部蓄冷运行的使用条件。
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