肝段作为实用的形态机能单位，是肝脏病变精确定位的基础。
As a practical morphological and functional unit, liver segments are the basis in the precise localization of liver disease.
前已指出：我们主要关心的是用线性、时不变微分方程作为实用的模型系统。
We have already stated that our main concern will be the study of systems for which linear, time-invariant differential equations provide a useful model.
集成声光可调滤波器（ATOF）作为实用光通信器件，显示了巨大的潜力。
The integrated-optic acoustically tunable optical filter (ATOF) has shown considerable potential as a practical optical communication component.
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