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功率天平
释义
功率天平
Encyclopedia
工学
电学量计量单位的复现
释
Watt balance/Kibble balance
功率天平
利用电功率与机械功率的平衡,测定电功率单位SI量值的装置。也可以用于测量普朗克常数h和质量单位千克的复现。
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seals of the Warring States Period
seal up
seal wear
seam
seaman
Seaman's Book
seamanship
sea manure
sea map publishing
sea map update
seam-burnt edition
Sea-Mirror of Circle Measurement
sea mite
seamless
seamless depth datum
seamless editing
seamless steel pipe for liquid service
seamless track
seamless tube
seamless underwear circular knitting machine
seamount
seamount ecosystem
seamount fishing ground
seamounts survey
seam processing
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