... Effctive cutting width 有交刨削宽度 Effctive piston area 振动面积 effctive management strategies 有效管理策略 ...
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分析了膜片加强筋的筋脉、剖面形状、面形状、角度等对扬声器低频参数的影响，得出了加强筋与膜片等效顺性以及有效振动面积之间的关系。
On the low-frequency parameters of speaker is analyzed, draws the affecting relation of strengthening rib and equivalent compliance , effective vibration area of diaphragm.
红外光谱法测定角质层脂质中C-H对称和不对称伸缩振动吸收峰峰位及其峰面积；
The peak shift and peak areas of C-H stretching vibration absorption were estimated by Fourier transform-infrared(FTIR).
由变幅杆大端直径、放大倍数、面积系数等已知条件，按照变幅杆设计理论对超声振动系统中的变幅杆进行设计；
According to the designing theory of amplitude amplifier pole, it could be designed by big end diameter, magnification, area index and other parameters.
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