This study is helpful for the quality analysis and control of the extract of blueberry.
该研究对于蓝莓提取物的质量分析与控制很有帮助。
OBJECTIVE To study the preparation method of zinc oxide film and quality control.
目的：探讨复方氧化锌涂膜剂的制备及质量控制方法。
The design of the pantograph's active control system and the study of the simulation results reduce the fluctuation of the contact force theoretically and thus improve the current collecting quality.
通过受电弓主动控制系统的设计和对其的仿真研究，理论上降低了弓网系统接触压力的波动，从而改善了受流质量。
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