precision n. 精密,精確性;嚴(yán)格;精密度;【修辭學(xué)】精確。 arms of precision 裝有瞄準(zhǔn)儀的槍炮。 adj. 精確的,精密的。 precision apparatus 精密儀器。 a precision balance 精密天平。 a precision fire 準(zhǔn)確射擊。
First, by comparing with mercury sphygmomanometer, the results of 35 stochastic individuals showed our abpm's precision reached aami's criterion and bhs's criterion 通過(guò)對(duì)35例測(cè)量者進(jìn)行水銀血壓計(jì)和abpm對(duì)比實(shí)驗(yàn),驗(yàn)證了abpm測(cè)量精度。
At the end of the article, this paper analyses the errors and uses subsection linearization to reduce the error . at last the precision reach the requirement 本文的最后對(duì)誤差進(jìn)行了分析,采用分段線性化的方法對(duì)儀器進(jìn)行了修正,使儀器的精度達(dá)到了設(shè)計(jì)要求。
After experimentally measuring and marking, this instrument's precision reaches 0.5 arcsec, which better satisfies the requirement-normally 2 arcsec the parallel precision of optical system testing 經(jīng)檢測(cè)標(biāo)定后平行度測(cè)試儀的精度可達(dá)到0.5",能夠很好的滿足檢測(cè)平行度為創(chuàng)的光學(xué)系統(tǒng)的檢測(cè)。
(3 ) distriction increasing for detecting bruise image of tomato was builttraining multilayer feedforward neural networks with bp for detecting tomato bruise and classification was built, and testing precision reached 90 % (3)建立用區(qū)域增長(zhǎng)法進(jìn)行番茄表面缺陷區(qū)域檢測(cè),用bp算法訓(xùn)練的多層前饋神經(jīng)網(wǎng)絡(luò)對(duì)番茄的損傷進(jìn)行分類。
First we identify the controlled plant offline, when the precision reaches a certain extent, we will achieve recursive predictive model by on-line identification . finally we acquire the optimized control law by minimizing the function of performance guideline 首先對(duì)被控對(duì)象進(jìn)行離線辨識(shí),在模型辨識(shí)達(dá)到一定的精度后,再在線遞推得到預(yù)測(cè)模型,最后通過(guò)極小化性能指標(biāo)得到最優(yōu)控制律。
Gps is a planet wireless conductance system which is global and all-weather, gps can offer high precision time orientation information to infinite user, clock precision reachs 10 ? 6 magnitude 。 not only changes traditional time method of quartz crystal clock, but also replaces wireless shortwave and even more lowfrequency signal and tv signal whose overlay range is limited and low precision, offers advantage to geology field task, achieve automatization and high precision of seismic flow observation 利用gps授時(shí)信號(hào)全方位、全天候、連續(xù)性、實(shí)時(shí)性和高精度的特點(diǎn),以gps信號(hào)為基準(zhǔn)來(lái)校準(zhǔn)本地時(shí)鐘(晶體振蕩時(shí)鐘或原子鐘),將gps接收機(jī)輸出信號(hào)的長(zhǎng)期穩(wěn)定度和恒溫晶振的短期穩(wěn)定度相結(jié)合,應(yīng)用大規(guī)??删幊踢壿嬈骷?設(shè)計(jì)和實(shí)現(xiàn)了由pc104控制的實(shí)時(shí)在線授時(shí)系統(tǒng)。
This paper gives a time-synchronization technique bases on gps time service signal which is used in broad band seismic recorder 。 by world coordination time offered by gps-- utc ( usno ), adjust local clock base on gps signal, gain high nicety clock signal, clock precision reachs 10-6 。 this clock is the time source of broad band seismic recorder, bring the whole seismic recorder works in same time base . 1pps time base with high stability can be used as in-phase, spring, time and start-stop of every collection mode, while the scale under second make a precise time mark to receive data of broad band seismic recorder 針對(duì)接收機(jī)中g(shù)ps信號(hào)的噪聲進(jìn)行kalman濾波軟件處理,kalman濾波可以對(duì)gps信號(hào)與本地晶振時(shí)鐘的時(shí)差數(shù)據(jù)在大噪聲中進(jìn)行平滑,在較短時(shí)間內(nèi)估計(jì)出高精度的時(shí)差數(shù)據(jù)。系統(tǒng)消除了gps秒脈沖信號(hào)的ms級(jí)隨機(jī)誤差,把晶振秒脈沖的長(zhǎng)期穩(wěn)定度鎖定到gps信號(hào)的穩(wěn)定度上;在gps信號(hào)失效時(shí)給出了可行措施,能夠保證在任何情況下產(chǎn)生一個(gè)穩(wěn)定、高精度秒脈沖信號(hào),誤差在1s內(nèi)。