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HD 478 2 7 S1-1990 Classification of Environmental Conditions Part 2 Environmental Conditions Appearing in Nature - Fauna and Flora《环境条件分类 第2部分 自然界环境条件 动植物》.pdf 3

HD 478 2 7 S1-1990 Classification of Environmental Conditions Part 2 Environmental Conditions Appearing in Nature - Fauna and Flora《环境条件分类 第2部分 自然界环境条件 动植物》.pdfHD 478 2 7 S1-1990 Classification of Environmental Conditions Part 2 Environmental Conditions Appearing in Nature - Fauna and Flora《环境条件分类 第2部分 自然界环境条件 动植物》.pdf

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3人阅读
HD 478 2 6 S1-1992 Classification of Environmental Conditions Part 2 Environmental Conditions Appearing in Nature Earthquake Vibration and Shock《环境条件分类 第2部分 自然界.pdf 5

HD 478 2 6 S1-1992 Classification of Environmental Conditions Part 2 Environmental Conditions Appearing in Nature Earthquake Vibration and Shock《环境条件分类 第2部分 自然界.pdfHD 478 2 6 S1-1992 Classification of Environmental Conditions Part 2 Environmental Conditions Appearing in Nature Earthquake Vibration and Shock《环境条件分类 第2部分 自然界.pdf

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HD 478 2 4 S1-1989 Classification of Environmental Conditions Part 2 Environmental Conditions Appearing in Nature Solar Radiation and Temperature《环境条件分类 第2部分 自然.pdf 3

HD 478 2 4 S1-1989 Classification of Environmental Conditions Part 2 Environmental Conditions Appearing in Nature Solar Radiation and Temperature《环境条件分类 第2部分 自然.pdfHD 478 2 4 S1-1989 Classification of Environmental Conditions Part 2 Environmental Conditions Appearing in Nature Solar Radiation and Temperature《环境条件分类 第2部分 自然.pdf

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6人阅读
HD 477 3 S1-1992 Methods of Measurement for Equipment Used in Terrestrial Radio-Relay Systems Part 3 Simulated Systems《地面无线电中继系统所用设备的测量方法 第3部分 仿真系统(IEC 487-3-19.pdf 3

HD 477 3 S1-1992 Methods of Measurement for Equipment Used in Terrestrial Radio-Relay Systems Part 3 Simulated Systems《地面无线电中继系统所用设备的测量方法 第3部分 仿真系统(IEC 487-3-19.pdfHD 477 3 S1-1992 Methods of Measurement for Equipment Used in Terrestrial Radio-Relay Systems Part 3 Simulated Systems《地面无线电中继系统所用设备的测量方法 第3部分 仿真系统(IEC 487-3-19.pdf

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HD 477 3 6 S1-1988 Methods of Measurement for Equipment Used in Terrestrial Radio-Relay Systems-Part 3 Simulated Systems- Section Six- Measurements for Sound- P.pdf 3

HD 477 3 6 S1-1988 Methods of Measurement for Equipment Used in Terrestrial Radio-Relay Systems-Part 3 Simulated Systems- Section Six- Measurements for Sound- P.pdfHD 477 3 6 S1-1988 Methods of Measurement for Equipment Used in Terrestrial Radio-Relay Systems-Part 3 Simulated Systems- Section Six- Measurements for Sound- P.pdf

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4人阅读
HD 313 1 S4-1987 Base Materials for Printed Circuits - Part 1 Test Methods《印制电路用基材 第1部分 试验方法》.pdf 3

HD 313 1 S4-1987 Base Materials for Printed Circuits - Part 1 Test Methods《印制电路用基材 第1部分 试验方法》.pdfHD 313 1 S4-1987 Base Materials for Printed Circuits - Part 1 Test Methods《印制电路用基材 第1部分 试验方法》.pdf

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8人阅读
HD 312-1977 Documentation to Be Supplied with Electronic Measuring Apparatus《带文档的电子测量仪器》.pdf 2

HD 312-1977 Documentation to Be Supplied with Electronic Measuring Apparatus《带文档的电子测量仪器》.pdfHD 312-1977 Documentation to Be Supplied with Electronic Measuring Apparatus《带文档的电子测量仪器》.pdf

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6人阅读
HD 311 6 S1-1988 Magnetic Tape Sound Recording and Reproducing Systems- Part 6 Reel-to-Reel Systems《磁带录音和复制装置 第6部分 双卷盘式磁带系统》.pdf 3

HD 311 6 S1-1988 Magnetic Tape Sound Recording and Reproducing Systems- Part 6 Reel-to-Reel Systems《磁带录音和复制装置 第6部分 双卷盘式磁带系统》.pdfHD 311 6 S1-1988 Magnetic Tape Sound Recording and Reproducing Systems- Part 6 Reel-to-Reel Systems《磁带录音和复制装置 第6部分 双卷盘式磁带系统》.pdf

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HD 311 3 S2-1989 Magnetic Tape Sound Recording and Reproducing Systems Part 3 Methods of Measuring the Characteristics of Recording and Reproducing Equipment fo.pdf 3

HD 311 3 S2-1989 Magnetic Tape Sound Recording and Reproducing Systems Part 3 Methods of Measuring the Characteristics of Recording and Reproducing Equipment fo.pdfHD 311 3 S2-1989 Magnetic Tape Sound Recording and Reproducing Systems Part 3 Methods of Measuring the Characteristics of Recording and Reproducing Equipment fo.pdf

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HD 311 2 S3-1993 Magnetic Tape Sound Recording and Reproducing Systems Part 2 Calibration Tapes《磁带录音和复制装置 第2部分 校准带(IEC 94-2-1975+A2-1991)》.pdf 4

HD 311 2 S3-1993 Magnetic Tape Sound Recording and Reproducing Systems Part 2 Calibration Tapes《磁带录音和复制装置 第2部分 校准带(IEC 94-2-1975+A2-1991)》.pdfHD 311 2 S3-1993 Magnetic Tape Sound Recording and Reproducing Systems Part 2 Calibration Tapes《磁带录音和复制装置 第2部分 校准带(IEC 94-2-1975+A2-1991)》.pdf

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