linear adj. 1.线的,直线的。 2.长度的。 3.【数学】一次的,线性的。 4.【动、植】线状的;细长的。 5.由线条组成的,以线条为主的,强调线条的。 linear amplification 直线放大。 a linear equation 一次方程式。 a linear leaf 线形叶。 linear arts 线条艺术。
After the nonlinear and absorption effect is taken into account in the applications where high power ultrasonic is involved , the first and second harmonic components of the sound field of stepped circular plate is analyzed , based on the kzk equation and quasi - linear condition 考虑到大功率超声应用中的非线性和吸收作用,本文从kzk方程和准线性条件出发,对于工作在共振频率下的这种阶梯圆盘,推导了它的一阶和二阶谐波声场计算方法。
Taking the transfer of energies between harmonics into account under the quasilinear approximation , the temperature distributions in tissues during ultrasound heating at various transducer parameters and tissue properties are investigated , and the results are compared with that obtained for linear conditions 摘要在准线性条件下,计及谐波间能量转移,分析了超声热疗换能器及组织特性参数对组织内温度场的影响,并与线性条件下的结果进行了比较。