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  • ASTM F3515-2021用于生物醫(yī)學(xué)和組織工程醫(yī)療產(chǎn)品應(yīng)用的豬纖維蛋白原作為原材料的鑒定和檢測的標(biāo)準(zhǔn)指南Standard Guid...2022-03-31
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  • ASTM F562-2013外科植入物用鍛制35鈷-35鎳-20鉻-10鉬合金規(guī)格(UNS R30035)Standard Specification for Wrought 35Co...2022-03-14
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  • Process-oriented Approach to Motivating Learners:Its Implications and Applications2020-11-22
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