
CALCULATION OF LOAD CAPACITY OF SPUR AND HELICAL GEARS - PART 5: STRENGTH AND QUALITY OF MATERIALS
出版:International Organization for Standardization

专家解读视频
CALCULATION OF LOAD CAPACITY OF SPUR AND HELICAL GEARS - PART 5: STRENGTH AND QUALITY OF MATERIALS
出版:International Organization for Standardization
专家解读视频