Distilled water was used to wash out protein and other polar components in plasma.
用蒸馏水冲洗出血浆中蛋白质和其它极性成分。
The 12 of low polar components of Anabasis Aphylla L. were separated and identified by gas chromatography-mass spectrometry. They are naphthalene and azulene species.
采用气相色谱-质谱测定无叶假木贼低极性化学成分，分离鉴定了12个化合物，它们是萘类与类化合物。
Polar plate is one of the core components in polymer electrolyte membrane fuel cell (PEMFC) stacks. Metal materials are used for polar plate to reduce cost and improve performance.
双极板是质子交换膜燃料电池的核心组件之一，采用薄金属板制备双极板能够提高燃料电池的比功率、降低生产成本。
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