linear portion meaning in English

直线段

Analytical results proves the existence of the two needed bend standing wave which generate traveling wave in the ring - type structure with two linear portions , and also confirms the existence of traveling wave through the harmony response analysis
采用有限元方法对带有两个直线段的超声波直线马达进行了分析,分析结果表明长环型结构上存在着产生行波所需的两个弯曲驻波。
The results indicate that the kinetic expression for the formation of uo2 + x in 25 - 150 was initially nonlinear , but switched to linear at long reaction times , that is , there exist two stages in the uo2 growth kinetics : nonlinear portion and linear portion
室温150下的氧化动力学曲线表明：金属铀表层氧化形成uo _ ( 2 + x )的过程中存在一个转折点，转折点前后形成两个反应阶段：非线性增长阶段和线性增长阶段。