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81. | spark ignition engine |
| 火花点火式引擎 |
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82. | the spark of genius. |
| 智慧的火花 |
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83. | incendive spark |
| 可引起着火的火花 |
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84. | igniter wipe spark |
| 拂式火花点火器 |
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85. | micrometer spark |
| 可微调的火花隙 |
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86. | asynchronous spark gap |
| 非同步火花隙 |
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87. | quenched spark transmitter |
| 熄灭式火花发报机 |
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88. | spark quenching condenser |
| 火花猝灭电容器 |
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89. | magnetic spark spectrometer |
| 磁火花谱仪 |
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90. | neon spark tester |
| 氖火花试验器 |
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