刘兴旺 发表于 2025-3-21 20:07:20

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PLE 发表于 2025-3-21 21:19:59

Macmillan Engineering Craft Serieshttp://image.papertrans.cn/e/image/305768.jpg

Limpid 发表于 2025-3-22 03:56:15

Macmillan Publishers Limited 1972

COM 发表于 2025-3-22 04:55:21

Analyse der Dynamik von Marktbedeutungen,A lever is a device which increases the effectiveness of a force (or effort) in doing work, for example, raising a load with the assistance of a crowbar.

CLASP 发表于 2025-3-22 12:18:52

Natalie Schilling,Florian VietzeMechanical work is done when a force causes movement.

ligature 发表于 2025-3-22 16:23:31

Polishing your plots for publication,If a person walks 7 km in an hour and 5 km in the next hour the . of the person is the average rate at which the distance is covered.

ligature 发表于 2025-3-22 18:04:51

https://doi.org/10.1007/978-3-319-24277-4A graph is a diagrammatic way of conveying information.

Obstacle 发表于 2025-3-22 22:22:10

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四溢 发表于 2025-3-23 02:06:54

Introduction: Wells and Biology,A magnet is a material capable of attracting or repelling certain other materials. A permanent magnet retains its magnetic strength for an indefinite period of time and is usually a metal alloy.

无所不知 发表于 2025-3-23 06:08:14

https://doi.org/10.1007/978-1-349-08655-9A simple a.c. generator comprises a coil which can be rotated between the poles of a magnet. Using the equipment provided rotate the coil and note the effect on the instrument.
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查看完整版本: Titlebook: Principles of Electronic Engineering; J. Fawcett,J. B. Pratley,D. D. Stewart Textbook 1972Latest edition Macmillan Publishers Limited 1972