The constant composition method was used to study the kinetics of demineralization on dentine crystal, hydroxylapatite and tooth enamel.
应用等组分晶体生长方法 ，研究了牙本质晶、羟基磷灰石、釉质晶脱矿动力学。
Compared with infant milk powder, ready-to-feed infant milk has many advantages, such as no need to dilute, constant composition, east to use, safe and hygienic, and so on.
与婴儿奶粉相比，液态婴儿奶具有很多优点，如勿需冲调、浓度恒定、喂食方便、安全卫生等。
Compared with infant milk powder, ready-to-feed infant milk has many advantages, such as no need to dilute, constant composition, east to use, safe and hygienic, and so on.
与婴儿奶粉相比，液态婴儿奶具有很多优点，如勿需冲调、浓度恒定、喂食方便、安全卫生等。
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