| 单词 | 乘积 |
| 释义 | 〔enthalpy〕A thermodynamic function of a system, equivalent to the sum of the internal energy of the system plus the product of its volume multiplied by the pressure exerted on it by its surroundings.焓，热函：一个系统中的热力作用，等于该系统内能加上其体积与外界作用于该系统的压力的乘积的总和〔scalar〕A device that yields an output equal to the input multiplied by a constant, as in a linear amplifier.放大器：一种其产生的输出值是输入值与某常数乘积的装置，如线性放大器〔sextuple〕Larger or greater by six parts multiplied by six.六倍的：大于六部分乘积的〔covariance〕A statistical measure of the variance of two random variables that are observed or measured in the same mean time period. This measure is equal to the product of the deviations of corresponding values of the two variables for their respective means.协方差：在观察或测量同一平均时间的两个任意变量的变化的一个统计值。这个值等于这两变量的各自平均值偏离其相应值的乘积〔weight〕The force with which a body is attracted to Earth or another celestial body, equal to the product of the object's mass and the acceleration of gravity.重力：地球和其它天体对某物体的作用力，它等于物体的质量与重力加速度的乘积〔power〕The product of applied potential difference and current in a direct-current circuit.电路：直流电路中的实际电位差与电流的乘积〔moment〕The product of a quantity and its perpendicular distance from a reference point.力矩：一个量和从参照点到它垂直距离的乘积〔forty〕The cardinal number equal to 4 × 10.四十：一个基数，为4和10的乘积〔expansion〕A quantity written in an extended form, as a sum of terms or a continued product.展开式：以展开形式写出的量，象数字的总和或连续的乘积〔product〕The number or quantity obtained by multiplying two or more numbers together.积，乘积：两个或两个以上数字相乘得到的数或量〔power〕The product of the effective values of the voltage and current with the cosine of the phase angle between current and voltage in an alternating-current circuit.伏特量：交流电路中电压与电流的有效值以及电流与电压之间相位角的余弦之乘积 |
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