根据不同工况，旋筒阀选用不同的控制元件，可以分类如下。
According to different working conditions, rotary cylinder valve selection of different control components, can be classified as follows.
汽车内燃机因设计的不同而不同，但某些元件是所有内燃机所共有的，并用作内燃机的分类依据。
Car engines vary in design, but certain elements are common to all engines and are used for engine classification.
这四个选择的聚合物作为敏感元件的传感器阵列，然后分类，主成分是适应四个模拟气体。
The four chosen polymers were used as sensitive component for a sensor array, and then PCA is adapted to classify four simulant gases.
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