frequency recorder 中文意思是什麼
frequency recorder
解釋
頻率記錄器-
The apparatus, with the specialities such as miniature, automation, flexibility, and individual - computer managing has become the developing trendof the testing equipment today. based on analysis of the characteristic and the system structure of the visual instrument, the paper has studied the design idea of it, put forward the exploiting methods of the visual instrument based on the object - oriented technique, exoatiated on the technique kernel of design the visual instrument under windows environment, designed a typical visual instrument " vis - 1 signal - analyzing and wave - displaying system ", which integrates multi - function instruments such as general oscillograph and ulf oscillograph real - time signal recorder wave and frequency - pedigree analysis instrument. the system has more excellent functions and characteristics than traditional instruments
本文研究了虛擬儀器系統的設計思想，在分析虛擬儀器系統的特點及其體系結構的基礎上，提出了基於面向對象技術的虛擬儀器系統開發方法；闡述了windows環境下實現虛擬儀器的技術要點；實現了一個典型的虛擬儀器系統「 vis ? 1信號示波分析系統」 ，該系統集普通示波器、超低頻示波器、存儲示波器、瞬態信號記錄儀、波形及頻譜分析儀等多種儀器功能於一身，並具有許多傳統儀器難以達到的優越功能和性能。 -
The principle of vibrator is to introduce scattered energy to underground in a comparatively long time, and collect the energy through correlation and compress it into a narrow pulse. the portable high - frequency vibrator system, developed by key lab of geo - exploration and instrumentation ( jilin univ ), ministry of education, generates chirp signal and accumulates energy through a long - time bestiring. according to the characteristics of vibrator, the seismic recorder that operates on - line with vibrator must have these functions as follow : first, it must have the ability of recording a great quantity of data. second, it must have assistant channels to sample reference signal. third, it must have the function of data correlation in real - time
可控震源利用可控的小能量、長時間激發波來實現沖擊震源瞬時產生的大能量激發波。在利用可控震源進行地震勘探時，要求地震儀長時間記錄地震信號，這對地震儀的采樣長度提出了很高的要求。受存儲量和數據傳輸速度的限制，絕大多數地震儀很難對如此大的數據量進行記錄，同時，可控震源要求地震儀有兩個輔助通道並且具有數據相關功能，目前國內還沒有出現滿足要求的地震儀產品。 -
( 4 ) use visual c + + to develop one ie measuring system mainly including the data acquisition recorder, real time analyzer and frequency domain analyzer
（ 4 ）以visualc + +面對對象的編程語言，開發了一套ie測量系統，主要由數據採集、實時分析和頻譜分析三部分組成。 -
To require multiplex licensees to encourage video cassette recorder ( vcr ) users to make use of the audio - visual inputoutput to replace the radio - frequency ( rf ) connection ( paragraph 4. 9 )
規定數碼頻道持牌機構鼓勵卡式錄影機用戶改以聲頻視頻輸入輸出端取代射頻接頭用以接駁電視機（第4 . 9段） 。 -
6 according to users requirement, outer equipments can meet other equipments, such as video cassette recorder, video disc machine, video recording machine, television receiver, etc. and it supports many kinds of rules, such as ntsc, pal, s video, etc. such as the computer disposes sound card, outer works set sound box which can realize the export of sound frequency signal
6外接設備根據用戶要求，可外接其它設備，錄像機影碟機攝像機電視接收機等，並支持ntsc pal s video等多種制式。如計算機配置聲卡，外接功放音箱，可實現音
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