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九九
释义
九九
Encyclopedia
理学
〔术语和基本概念条目〕
释
multiplication
九九
中国古代数学中的乘法口诀或表格,因早先的形式始于“九九八十一”,与现在次序相反,故名。又称九九表、九九之术。
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fire supervising
fire supervision and inspection system
fire supervision technical equipment
fire suppression device
fire technology and engineering
fire telephone system
fire test
fire triangle
fire tube boiler
fire tube type heater
fire vehicle access
fire ventilation
fire wall
firewall
fire watchtower
fire water
fire weather rating
fire whirl
fire wireless three level network
firewood
firewood kiln
Fireworks
fireworks and firecrackers
firing
firing count vector
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