发布时间:2025-01-24 09:33:07
平行距离按10%来算,那么56米大致等于垂直杨程5.6米,加上垂直杨程4米,约等于10米的杨程。一般水泵参数在选型时会考虑弯头的损耗,杨程选大一档,放在c是可以用,但放在a吸程不够。不知道你用的什么水泵,建议用潜水泵放在c点,杨程10米以上。
abc卫生巾是日本产的可耻的日本人在薄荷芯片里添加了多少工业染
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