夠笨的,水泵可以放在梯子下方,就沒你說的側向拉力了。放梯子,角度是門學問,太陡不容易上去,太緩梯子會前後彈跳晃動,站都站不穩,更不安全。側滑,從來沒發生過。
夠笨的,水泵可以放在梯子下方,就沒你說的側向拉力了。放梯子,角度是門學問,太陡不容易上去,太緩梯子會前後彈跳晃動,站都站不穩,更不安全。側滑,從來沒發生過。
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