certified burette

例句：

1. 1. The chemist used acertified burette to measure the concentration ofthe solution.
   化学家使用一个认证的滴定管来测量溶液的浓度。
2. 2. Thescientist conducted an experiment using a certified burette to test the accuracy of their method.
   科学家使用一个认证的滴定管进行实验，以测试他们方法的准确性。
3. 3. Theengineer used a certified burette to fillthe tank with the correct amount of liquid.
   工程师使用一个认证的滴定管来向罐子中准确添加液体。