叶蜡石的红外光谱有两种基本振动形式。
There are two basic vibration forms in the infrared spectrum of pyrophyllite.
整体式叶轮主要振动形式是叶轮的弯扭振动。
The major shapes of the impeller are coupled bending and torsion.
旋转机械结构的复杂化需要更加精确地了解转子的空间振动形式。
The complication of rotary machines asks for more accurate realization of the rotor's oscillation in space.
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