Sounder

(noun.) a device for making soundings.

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• The carbon being only slightly compressed will offer considerable resistance to the flow of current from the local battery, and therefore the signal on the local sounder will be weak. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• When current is made, the relay attracts an armature, which thereby closes a circuit in a local battery and thus causes a click of the sounder. 伯莎M.克拉克. 科学通论.
• There is frequent recognition in classical literature of a sounder cosmogony. 赫伯特·乔治·威尔斯. 世界史纲.
• Under these conditions the current of the main line is not sent through the sounder, but through the relay which opens and closes a local battery in connection with the strong sounder. 伯莎M.克拉克. 科学通论.
• To test this we disconnected the wire between the frog and battery, and placed, instead of a vibrating sounder, a simple Morse key and a sounder taking the 'etheric' from armature. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• It was sounder than pretending. 欧内斯特·海明威. 丧钟为谁而鸣.
• Gerald felt that his own understanding was much sounder and safer. 戴维·赫伯特·劳伦斯. 恋爱中的女人.
• He has put Sir Leicester's sounder arm over his shoulder in lifting him up, and Sir Leicester is slow in drawing it away again as he says these words. 查尔斯·狄更斯. 荒凉山庄.
• Sleep where you slept last; the sounder and longer you can sleep, the better you'll know arterwards what you're up to. 查尔斯·狄更斯. 我们共同的朋友.
• I told him the circumstances, and suggested that he had better cipher such communications, or put on a secret sounder. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• The train, and also each signalling station, was equipped with regulation telegraph apparatus, such as battery, key, relay, and sounder, together with induction-coil and condenser. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• This sounder soon drove out the old Morse recorder. 鲁伯特·萨金特·荷兰. 历史性发明.
• Edison thought that the longitudinal vibrations caused by the sounder produced a more marked effect, and proceeded to try out his theory. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• In practically all telegraph offices of the present day the old-fashioned tape is replaced by the sounder, shown in Figure 219. 伯莎M.克拉克. 科学通论.
• It is clear that the working of the key which starts and stops the current in this line will be imitated by the motion and the resulting clicks of the sounder. 伯莎M.克拉克. 科学通论.
• What happened is described by Adams as follows: We gathered up a couple of sounders, a battery, and sonic wire, and at the appointed time called on her to do the stunt. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• I obviated this by using several relays, each with a different adjustment, working several sounders all connected with one sounding-plate. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.

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