The parallel tubes of the test solution are all negative, indicating that the test product complies with the regulations. Masculine is represented by "+" and feminine is represented by "-".
The parallel tubes of the test sample solution are all negative, indicating that the test sample meets the requirements. Positive is represented by "+", negative is represented by "-".
The parallel tubes of the test solution are all negative, and it is judged that the test product meets the requirements. The masculine gender is indicated by "+"and the feminine gender by "-".