Indicator
['ɪndɪkeɪtə] or ['ɪndɪketɚ]
解释:
(noun.) a device for showing the operating condition of some system.
(noun.) a signal for attracting attention.
(noun.) (chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction.
校对:劳伦斯--From WordNet
解释:
(n.) One who, or that which, shows or points out; as, a fare indicator in a street car.
(n.) A pressure gauge; a water gauge, as for a steam boiler; an apparatus or instrument for showing the working of a machine or moving part
(n.) An instrument which draws a diagram showing the varying pressure in the cylinder of an engine or pump at every point of the stroke. It consists of a small cylinder communicating with the engine cylinder and fitted with a piston which the varying pressure drives upward more or less against the resistance of a spring. A lever imparts motion to a pencil which traces the diagram on a card wrapped around a vertical drum which is turned back and forth by a string connected with the piston rod of the engine. See Indicator card (below).
(n.) A telltale connected with a hoisting machine, to show, at the surface, the position of the cage in the shaft of a mine, etc.
(n.) The part of an instrument by which an effect is indicated, as an index or pointer.
(n.) Any bird of the genus Indicator and allied genera. See Honey guide, under Honey.
(n.) That which indicates the condition of acidity, alkalinity, or the deficiency, excess, or sufficiency of a standard reagent, by causing an appearance, disappearance, or change of color, as in titration or volumetric analysis.
手打:托马斯
例句:
- The fraction drum of the indicator could be driven in either direction, known as the advance and retrograde movements, and was divided and marked in eighths. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- It happened that one day soon after his arrival he was walking through Wall Street and was attracted to the office of the Law Gold Indicator. 鲁伯特·萨金特·荷兰. 历史性发明.
- Our first engine compelled the inventing and making of a suitable engine indicator to indicate it--the Tabor. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- The indicator was composed of several wheels; on the circumference of each wheel were the numerals; and one wheel had fractions. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- He obtained the desired speed and load with a friction brake; also regulator of speed; but waited for an indicator to verify it. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- One indicator looked upon the Gold Room; the other opened toward the street. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- The Gould and Fisk crowd had cornered gold, and had run the quotations up faster than the indicator could follow. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- The hour glass was another form of time indicator, which was capable of uniform, though extremely limited, action. 佚名. 神奇的知识之书.
- Pope, was already active in the same direction, Mr. Callahan, with ready wit, transformed his indicator into a ticker that would make a printed record. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- The field-regulating apparatus and the electrical-pressure indicator--first of its kind--were also tested, and in turn found satisfactory. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- It was intended more especially for importers and exchange brokers, and was furnished at a lower price than the indicator service. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- I went to the indicator, and, having studied it thoroughly, knew where the trouble ought to be, and found it. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- It was worked somewhat on the plan of the hotel indicator. 鲁伯特·萨金特·荷兰. 历史性发明.
- I kept this position, made many improvements, devised several stock tickers, until the Gold & Stock Telegraph Company consolidated with the Gold Indicator Company. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- Mr. Callahan's first idea was to distribute gold quotations, and to this end he devised an indicator. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- The indicators or stock-tickers of this company were a new device, and were distributed through most of the large brokerage houses of the city. 鲁伯特·萨金特·荷兰. 历史性发明.
- It geared into a unit drum, just as do speed-indicators and cyclometers. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- Edison's remarks shed a vivid side-light on this extraordinary episode: On Black Friday, he says, we had a very exciting time with the indicators. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- Later on this primitive indicator was supplanted by the Bradley Bridge, a crude form of the Howell pressure indicators, which were subsequently used for many years in the Edison stations. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
编辑:韦德