英语词汇“window jack”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

window jack n. North American a type of scaffolding attached to a window opening to enable work to be carried out on the outside of the window; cf. earlier window cleaner n. 2.

ΘΚΠ

society > occupation and work > equipment > ladder > scaffolding > [noun] > for cleaning or painting windows

window cleaner1836

window jack1843

cripple1887

1843 Boston Courier 8 May (advt.) The Tools of trade of a Painter and Glazier, consisting of ladders, standing casks, tin cans, window jacks, [etc.]

1958 Washington Post 11 Jan. a9/3 That man is violating safety regulations by standing on a ladder. He should be using window jacks.

2014 Code of Federal Regulations: 29: Labor (Office of Federal Register, U.S.) (rev. ed.) 294/1 Window jacks shall not be used to support planks placed between one window jack and another.

单词	window jack
释义	> as lemmas window jack window jack n. North American a type of scaffolding attached to a window opening to enable work to be carried out on the outside of the window; cf. earlier window cleaner n. 2. ΘΚΠ society > occupation and work > equipment > ladder > scaffolding > [noun] > for cleaning or painting windows window cleaner1836 window jack1843 cripple1887 1843 Boston Courier 8 May (advt.) The Tools of trade of a Painter and Glazier, consisting of ladders, standing casks, tin cans, window jacks, [etc.] 1958 Washington Post 11 Jan. a9/3 That man is violating safety regulations by standing on a ladder. He should be using window jacks. 2014 Code of Federal Regulations: 29: Labor (Office of Federal Register, U.S.) (rev. ed.) 294/1 Window jacks shall not be used to support planks placed between one window jack and another. extracted from windown. < as lemmas
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> as lemmas