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powder metallurgy friction materials
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powder metallurgy friction materials
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工学
粉末冶金摩擦材料
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powder metallurgy friction materials
粉末冶金摩擦材料
采用粉末冶金方法制成的、具有高摩擦系数和高耐磨性能的金属和非金属复合材料。又称烧结金属摩擦材料。
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photomural
photon
photon activation analysis
photon activation analysis (PAA)
photo nadir point
photon and dilepton production
photon annihilation
photon antibunching
photon-assisted tunneling
photonasty
photon avalanche
photon bunching
photon bunching and antibunching
photon channel
photon coincidence
photon collider
photon counter
photon counting
photon-counting detector
photon decoupling
photon degeneracy
photon detection
photon detector
photon diffusion
photon Doppler velocimetry
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