White residue remaining after cleaning circuit board assemblies can be caused by a variety of chemicals and reactions.
印刷电路板组装清洗后，常常留有许多白色残渣，这些残渣由许多的化学物反应而成。
Solution: cleaning the oil circuit, check whether the idle motor carbon should be cleaned.
解决办法：清洗油路，检查怠速马达是否有积碳应该清洗。
An adhesive must withstand the environment of hot solder, fluxing and cleaning, it may not have an electrical effect on the circuit.
胶粘剂必须能适应使用高温焊料及助焊剂、清洗剂时的环境，还不能影响电路的性能。
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