| 单词 | ball valve |
| 例句 | He fitted the bucket with a hose that was controlled by a ball valve of the sort used in swimming pool plumbing systems. An Artist?s Alfresco John Hancock 2010-09-18T00:13:00Z Should you have a full-pressure leak, you can cut the copper pipe, slide on an open ball valve and use a press tool to crimp the valve onto the copper tubing. Be ready — pipes can burst in any house 2023-04-17T04:00:00Z The device mimics the upper GI tract: an artificial stomach with a pressure pump, and a ball valve 'sphincter muscle,' leading up to the esophagus and throat. Vomit Machine Models Cruise-Ship Virus Spread 2015-08-22T04:00:00Z An overflow is provided, discharging into the open air to allow the water to escape should the ball valve become defective. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 "Hearing" to "Helmond" 2012-04-25T02:00:53.567Z The plunger is loaded with a spiral spring, and has a ball valve, as shown. Gas and Oil Engines, Simply Explained An Elementary Instruction Book for Amateurs and Engine Attendants The charge of carbide is placed in a partitioned container, and is gradually attacked on the flooding principle by the water which enters from the gasholder tank when the ball valve is depressed. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power Q.--Are none but ball valves used in the feed pump? A Catechism of the Steam Engine The ball valves are guided by four branches, which rise vertically, and join together at the top in a hemispherical form. A Catechism of the Steam Engine The most ordinary species of valve in the feed pumps of locomotives, is the ball valve. A Catechism of the Steam Engine It will be seen that the suction of the pump will draw the oil up, the small and lower ball valve, of course, allowing it to pass freely. Gas and Oil Engines, Simply Explained An Elementary Instruction Book for Amateurs and Engine Attendants |
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