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Continuous variables were compared using the Student's t-test for normally distributed variables and the Mann–Whitney U test for non-normally distributed variables. Pearson's chi-square or Fisher's exact test was performed to compare categorical variables. Primary data analyses were performed to com...
参考答案: 压力不稳可能是由多种原因导致的,如泵内泄漏、溢流阀故障等。以下是处理压力不稳的方法: a.检查泵:更换磨损的泵零件,保证泵的正常工作。 b.检查溢流阀:清洗或更换损坏的溢流阀,保证阀门的正常工作。 c.排除空气:排除系统中的空气,避免空气压缩影响压力稳定。 复制 纠错...