国外机构在国内设立无损检测培训考试中心为中国当地客户提供本土服务是时代发展的需要,但同时我们也得设防防止部分不良机构欺骗我们。下面关于某些机构颁发的证书提出个人见解,供大家参考! 某些机构颁发的证书在下面有这样一句话:“Authorised body according to article 13 of pressure equipment directive 97/23 ...
Darkroom Fog Although the effect of fog on an x-ray film is usually subtle, it can degrade the image quality to such an extent that the examination must be repeated. Fogging may be due to many factors, including improper film storage conditions, accidental exposure to ionizing radiation, improper p ...