first variation是什么意思

网络释义

用法例句

This paper focuses on the three major technical obstacles encountered in the process of designing the VHF SSB mobile receiver and presents a design program using one time frequency converting,dual-PLL.

文中重点叙述如何解决甚高频单边带移动接收机设计所遇到的三大技术障碍,同时介绍了采用一次变频双锁相环的设计方案,得到了研制出的性能样机的各项指标。

Based on the analyses of the content of master-slave flip-flop in several digital circuits books,several problems are discussed,such as the meaning of master-slave flip-flop,graphic symbols,the phenomenon of one-shot change.

在对国内若干数字电路教材中主从触发器内容分析的基础上,对主从触发器的含义、图形符号、一次变化等问题进行了探讨,提出了现行教材存在的不足,并给出了处理意见。

The regularity of forming secondary branch on the primary branch of female plant was studied by using three sterile lines with different percentage of sterile plant and crossed with same male parent.

以 3个不同不育株率的不育系为母本 ,用相同的父本进行制种 ,对母本植株一次分枝上二次分枝的形成规律进行了研究。

single conversion superheterodyne

一次变频超外差接收机

Energy Conservation Method Research of the Variable-Frequency Primary Pump in Air-conditioning Chilled-water System;

空调冷冻水一次泵变频节能方法研究

High-voltage frequency-conversion renovation of 3~# ventilator of primary dust-collecting system of converter

转炉一次除尘3~#风机高压变频改造

HIGH-VOLTAGE FREQUENCY-CONVERSION REFORMATION OF No.3 VENTILATOR OF PRIMARY DUST-COLLECTION SYSTEM OF CONVERTER

转炉一次除尘3#风机高压变频改造

DCS Control Policy of Primary Air Fan Frequency Converting Reconstruction

一次风机变频改造的DCS控制策略

Frequency Transformation of Primary Air Fan Variable in Huaneng Pingliang Power Generation Company

华能平凉发电公司一次风机变频改造

The Performance of Variable Primary Flow System

空调一次泵变频系统运行特点及设计重点

Frequency conversion renovation of primary pump of air-conditioning system for one hotel

某酒店空调系统一次泵变频改造实例分析

The application of high voltage varying frequency speed adjustment on air blower of 600MW unit

高压变频调速在600MW发电机组一次风机上的应用

triple superheterodyne

三次变频超外差接收机

Research and Application in Primary Air Fan Frequency Control System on No.3 BaoTou Thermal Power Plants

包头第三热电厂一次风机变频改造的研究与应用

Application of HVC in primary air fan

高压大功率变频调速装置在一次风机电机上的应用

The number of repetitions of a complete sequence of values of a periodic function per unit variation of an independent variable.

频率当自变量变化一个单位时，周期函数取同一完整数序的重复次数

Application of Inverter in Speed Adjustment for Square Law Loads

变频器在二次方率负载调速中的运用

A Simple and Easy Test Method of Conversion Loss of a Mixer

混频器变频损耗的一种简易测试方法

Each iteration of the loop adds another octave of twice the frequency.

每次循环跌代叠加另一个两倍频率的倍频。

The number of measurements in an interval of a frequency distribution.

频率分布一次频率分布的区间内计算的数量

Relationship Between Primary Frequency Modulation Speed Difference and Primary Frequency Modulation Load for Steam Turbines

汽机一次调频转差与调频负荷关系的探讨