求教几个句子的意思

1. initials name missing
2. The test instructions shall specify which equipment will be used as a function of joint thickness
3. Procedures require the identity, formal stamp and signature of level III NDE engineer as well as the date        of validity.

1. initials name missing
缩写名称缺失
2. The test instructions shall specify which equipment will be used as a function of joint thickness.
测试说明应指定将使用哪种设备作为一个接头厚度的函数。
3. Procedures require the identity, formal stamp and signature of level III NDE engineer as well as the date of validity.
程序需要的身份，正式图章和III级无损检测工程师签名以及有效日期。
仅供参考

楼上的第二点翻译的让人不明不白，这应该是个无损检测工艺程序的审查意见，第二点的意思是“ 根据不同的焊接接头厚度应选用不同的检测设备，请在检验说明中指明各厚度对应的具体设备。”

个人认为三楼的同志更接近正解。关键是 which指代和specify的翻译。