second moment是什么意思

网络释义

用法例句

Effect of Linear Motor Secondary on Motor Heat;

直线电机次级对电机发热的影响

It fits for small batch testing minitype power transformer s primary no-load electric current,rated electric current and secondary no-load electric current,full-load voltage,load current,etc.

该电路设计简单、构思新颖 ,适合小批量测试小型电源变压器的空载电流、额定电流及次级空载电压、满载电压、负载电流等参

This property can be employed to extract quickly the initial values of the decaying DC components,fundamentals and even harmonics by shifting the data window according to the amplitude-fre.

通过适当调整正弦、余弦滤波器的初相位,使衰减直流分量对基波的泄漏在较宽的时间常数变化范围内约是衰减直流分量初始值的常数倍,利用这一特性,根据半波傅氏算法的幅频泄漏规律并移动数据窗快速提取出基波分量、偶次谐波分量及衰减直流分量初始值。

In the fourier series,besides sine wave and cosine wave,fourier series of some functions only have the odd subwave don t have even subwave.

在付立叶级数中,除了正弦波、余弦波外,还有的函数的付立叶级数只有奇次波而没有偶次波,或只有偶次波而没有奇次波,本文给出什么样的函数只有奇次波而没有偶次波,什么样的函数只有偶次波而没有奇次波,以及偶次波和奇次波的系数计算公式。

secondary gonocyte

次级性原细胞, 次级生殖母细胞

secondary electron multipactor limiter

次级电子倍增限幅器

open circuit secondary voltage

次级绕组的空载电压

secondary ion mass spectrometry

次级离子质谱分析法

hard copy reproduction sub-system

硬拷贝复制次级系统

Secondary Standards Dosimetry Laboratories

次级标准剂量学实验室

secondary electron conduction target vidicon

次级电子导电视像管

Subordinated Debentures

次级债券、附属信用债券

Sub-programme on Environment and Energy

环境和能源次级方案

secondary instrumental conditioning

次级工具式交替学习

Having a secondary, supplementary, or subordinate function.

次级的，附加的，辅助的

Synthesis of a-Fe_2O_3 with particle Morphologies;

次级结构a-Fe_2O_3的合成

ratio of secondary to primary wool follicles

次级毛囊对初级毛囊比例

primary and secondary wood processing industries

初级和次级木材加工工业

secondary signal system

二级信号系统 次级信号系统

Why the Influence of "Subprime Mortgage Crisis" is the "Heavyweight" ?;

“次级债风波”的影响为何是“重量级”的?

secondary emission

ph.1. 【电】二次发射,次级发射

not arranged in order hierarchically.

没有按等级排列成次序。