探讨了p H值滑动剂、尼龙污染防止剂、匀染剂的用量及染色温度和时间对锦纶的沾污影响情况，并提出了改进措施。
The influence of pH modifier, anti staining agent for nylon, levelling agent, dyeing temperature and time to nylon contamination were discussed. The improved measures were put forward.
液氮灭火系列用后无沾污、无污染、绿色环保；
The device is a green product, free from pollution and environment friendly after use;
液氮灭火系列用后无沾污、无污染、绿色环保；
The device is a green product, free from pollution and environment friendly after use;
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