Sump pits are very common in Canada and if you have one it's a good time to test its' operation and install the discharge hose outside (away from your house of course).
集水坑在加拿大非常常见。如果你家有集水坑，现在需要检查一下其运行情况，在外面装上泄水软管(当然要在你家外面喽！)
This test-bed is mainly used for high and low pressure seal of High-pressure hose.
该试验台主要用于高压胶管的高低压密封。
This test-bed is mainly used for high and low pressure seal of High-pressure hose.
该试验台主要用于高压胶管的高低压密封。
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