Indicator

(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

• 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