Why couldn’t they just throw it down a storm drain?
普罗斯女士写道“为什么他们不能仅仅把它扔到暴雨下水道?
'I was a little nervous about losing the ring,' recalls the property developer, who dropped to one knee inside a cavernous red-brick storm drain.
当时,在一个红砖砌成的暴雨排水洞内,他单膝跪下。他回忆道,“我有点担心会把戒指丢了。”
Spring-actuated valve to be used on pump discharge. Swing check with outside lever and spring to be used on sump, sewage and storm drain lines.
弹簧执行机构止回阀用于管道排放。外置操作手柄和弹簧执行机构的旋启式止回阀用于污水坑、排污和雨水排泄管道。
应用推荐