确定了负载化工艺条件并制得流动性好的类球型负载型茂金属催化剂。
Based on the technological process and support condition, the supported spherical metallocene catalyst with fine mobility was prepared.
为使系统的功率因数较高，采用电压源型负载串联谐振中频逆变器和频率跟踪技术。
In order to improve the power parameter further, the intermediate frequency inversion of an electric voltage power type series resonance and frequency trace technique are adopted.
本发明公开了一种热增强型负载液态氟碳的聚合物纳米超声显像胶束及其制备方法。
The invention discloses a thermal-enhanced polymer nano ultrasonic imaging micelle loaded with liquid fluorocarbon and a preparation method thereof.
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