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- 电容器 (6)
- materials (4)
- 研究 (4)
- equipment and supplies (3)
- power resources (3)
- handbooks, manuals, etc (2)
- recording and reproducing (2)
- sound (2)
- 电力 (2)
- actuators (1)
- biopolymers (1)
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- carbon (1)
- carbon composites (1)
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- carbon nanotubes (1)
- detectors (1)
- dispositifs a micro-ondes (1)
- electric apparatus and appliances (1)
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