翻訳と辞書 Words near each other ・ Jacks Knob Trail ・ Jacks Mountain ・ Jacks Mountain Covered Bridge ・ Jacks Mountain Tunnel ・ Jacks Peak Formation ・ Jacks Peak Park ・ Jacks River ・ Jacks Valley ・ Jacks-Manning Farm ・ Jacksboro ・ Jacksboro High School ・ Jacksboro Independent School District ・ Jacksboro Limestone ・ Jacksboro, Tennessee ・ Jacksboro, Texas ・ Jackscrew ・ Jacksdale ・ Jacksel M. Broughton ・ Jacksen F. Tiago ・ Jacksen Pierce ・ Jacksepticeye ・ JacksGap ・ Jackshaft ・ Jackshaft (locomotive) ・ Jackslacks ・ Jacksnipe ・ JACKSNNZ ・ Jackson ・ Jackson & Curtis ・ Jackson & Perkins Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Jackscrew ： ウィキペディア英語版 Jackscrew A jackscrew is a type of jack that is operated by turning a leadscrew. In the form of a screw jack it is commonly used to lift moderately heavy weights, such as vehicles. More commonly it is used as an adjustable support for heavy loads, such as the foundations of houses, or large vehicles. These can support a heavy load, but not lift it. ==Advantages== An advantage of jackscrews over some other types of jack is that they are ''self-locking'', which means when the rotational force on the screw is removed, it will remain motionless where it was left and will not rotate backwards, regardless of how much load it is supporting. This makes them inherently safer than hydraulic jacks, for example, which will move backwards under load if the force on the hydraulic actuator is accidentally released. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Jackscrew」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.