
BS EN 60811-409 - ELECTRIC AND OPTICAL FIBRE CABLES - TEST METHODS FOR NON-METALLIC MATERIALS - PART 409: ENVIRONMENTAL TESTS - LOSS OF MASS TEST FOR THERMOPLASTIC INSULATIONS AND SHEATHS
出版:British Standards Institution

专家解读视频
BS EN 60811-409 - ELECTRIC AND OPTICAL FIBRE CABLES - TEST METHODS FOR NON-METALLIC MATERIALS - PART 409: ENVIRONMENTAL TESTS - LOSS OF MASS TEST FOR THERMOPLASTIC INSULATIONS AND SHEATHS
出版:British Standards Institution
专家解读视频