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对称与不对称
释义
对称与不对称
Encyclopedia
哲学
自然界的辩证发展
释
symmetry and asymmetry
对称与不对称
概括自然界辩证发展的基本概念之一,指事物、现象、过程或规律,包括物质或能量的转换、运动以及物质的条件、结构、属性和关系等以一定的中介进行某种变换时的不变性和可变性,是世界统一性和多样性的一种表现。对称是指任何在经受各种操作之后仍基本保持不变的系统所具有的特性。不对称也称为对称性破缺[注],指系统以一定中介变换时所保持的结构可变性。
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water transportation management in ancient China
water transportation pipe network
water transportation to the capital
water transport engineering construction positioning survey
water transport engineering survey
water transport planning
water treatment chemicals
water treatment membrane
water treatment plant
water treatment plant production capacity
water treatment process
water treatment system
water treatment unit for liquefaction process
water tube boiler
water tube boiler of single drum horizontal type
water tube boiler of single drum vertical type
water tunnel
water use benefit
water use control
water use efficiency
water use investigation
water use norm
water user association
water-use right
water vacuum tank
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更新时间:2026/7/21 13:18:22