307
edits
Changes
绳子与水桶
,no edit summary
===建造、运作与维护===
[[Image:RopeandBucketdrawing.jpg|thumb|right|200px|绳桶提水装置。图片来源:WHO(世界卫生组织)]]
产水量:10米深时0.25 升/秒。
This site will use cookies for managing the user session. You will not be able to login unless you accept the cookie policy.