charge to mass ratio的用法和样例：
例句
- Electrode experiment equipment was developed,and electrostatic spraying charge-mass ratio measurer was developed.
开发了电极试验装置，并自制了荷质比测试装置。 - Because the proteins have the same charge-to-mass ratio, and because the gels have sieving properties, mobility becomes a function of molecular weight.
重要的是，这些负电荷中和了蛋白分子的内在电荷，使所有的蛋白质具有了相同的荷质比，在凝胶的分子筛作用下，迁移速率就变成与分子量相关。
