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Possessing good properties for damp-proof , dustproof and shocking resistance.
具有良好的防潮 、 防尘、抗冲击性能.
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有良好的防潮密封 ( 可选用胶封和激光焊接 ),适应恶劣工作环境.
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Her splendid optimism damped him; it had too little traffic with the reasoning powers.
她的过分乐观使他沮丧; 因为那种乐观跟理解力太少联系.
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