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大小写变形:tpd
Crystal structure was obtained by XRD. Relative acid strength and acid amount were gotten by NH 3 - TPD.
用XRD测试了催化剂的晶体结构,用NH3-TPD测试了催化剂的相对酸强度和酸量分布.
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= Time Propagation Delay,传播延时,传输延时; = Time Pulse Decoder, 定时脉冲译码器???
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