| 释义 |
slippage|ˈslɪpɪdʒ|
[f. slip v.1 + -age.]
1. a. The act of slipping or subsiding. b. Amount or extent of slip.
1850Mallet in Rep. Brit. Assoc. i. 61 The sudden slippage under water of large masses of submarine banks of sand or mud. 1898T. Thornley Draw & Fly Frames 71 This, of course, is the effect produced by slippage of cone belt alone.
2. Mech. The difference between the expected and the actual output of a system.
1905W. Rogers Pumps & Hydraulics II. 384 Pump slip or slippage represents the difference between the calculated and the actual discharge of a pump. 1936Kent's Mech. Engineers' Handbk. (ed. 11) II. i. 41 Actual Volumetric Efficiency/Indicated Volumetric Efficiency = Slippage Efficiency [of an air compressor]. This is the ratio of the volume of measured air delivered to the apparent volume shown by the indicator diagram.
3. transf. and fig. Falling away from a standard; the measure of this. spec. with reference to (a) failure to meet a deadline or fulfil a promise, delay; (b) loss of public esteem, of a candidate for office in popularity ratings; (c) Econ., decline in value.
1920in Webster. 1960Washington Post 1 Jan. A16 It is almost as if a deliberate decision had been taken to accept second-place status. This continued slippage also affects starkly the challenges that lie ahead. 1960Guardian 13 May 10/5 The failure (or ‘slippage’ as delays are now called) of their 400-mile anti-aircraft missile. 1968Ibid. 22 Aug. 9/7 The latest Gallup poll..shows that Nixon would get 45 per cent of the votes compared with Humphrey's 29 per cent. That is an astonishing slippage for the Vice-President. 1970Nature 13 June 1011/2 ESRO's biggest project..is the half-ton TD1 astronomy satellite which was to have been launched in spring 1972, although some slippage now seems likely. 1972Guardian 1 Nov. 12/2 British living standards could be eroded by a continued slippage of sterling. 1976Times 20 Apr. 13/3 There is widespread concern among parents that standards of achievement and behaviour in schools have been allowed, if not to collapse, at least to slip... This apparent slippage has taken place at the time when the number of comprehensive schools has increased rapidly. 1980M. Lee Govt. by Pen 211 His health had been giving way, and there were signs of mental slippage. 1982Sunday Times 10 Oct. 54/3 Given the traditional slippage that occurs in the timetable on such projects, the company will not know at the outset just when it will have to draw down the cash for each stage payment. |