addition of complex quantities的用法和样例：
- A new immersion plating process was developed in which copper sulfate and stannous sulfate were used as main salt, with addition of complex, brightener and stabilizer to tin salt.
- The addition of fruit makes the cereal taste good.
- A car comes into being through a series of complex operations.
- The addition of DBR know-how allows this wine to reach new levels of complexity and elegance.