Quality Control-(品管)

1. (问题、局势)难对付的，考验人的，棘手的
    A testing problem or situation is very difficult to deal with and shows a lot about the character of the person who is dealing with it.

2. 检验;试验;检测
    Testing is the activity of testing something or someone in order to find out information.

1. the act of giving students or candidates a test (as by questions) to determine what they know or have learned

    Synonym: examination

2. the act of subjecting to experimental test in order to determine how well something works

    e.g. they agreed to end the testing of atomic weapons

3. an examination of the characteristics of something

    e.g. there are laboratories for commercial testing
           it involved testing thousands of children for smallpox