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英语解释

improvement trade

汉语翻译

【经】 改良(造)贸易
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transit improvement tradeimprovement trade for importimprovement trade for exportwideband improvementsystem improvement timeself-improvementreserve for improvement on propertypulse-improvement thresholdprofit improvement plan and performance evaluationproduct improvementperformance improvementnoise-improvement factor
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