precision n. 精密,精確性;嚴格;精密度;【修辭學】精確。 arms of precision 裝有瞄準儀的槍炮。 adj. 精確的,精密的。 precision apparatus 精密儀器。 a precision balance 精密天平。 a precision fire 準確射擊。
Occasional requests are received for statistics not readily available from standard tabulations . these are also entertained at a charge subject to the level of analysis permissible having regard to considerations of statistical precision and data confidentiality 有時候,已編制的標準統(tǒng)計表未必備有使用者要求提供的數據,如遇上這情況,本處會考慮有關統(tǒng)計數據的精確度及個別資料保密規(guī)定所容許的分析層次來提供有關資料,并收取所需費用。
Then the periodic properties of geocenter motion in the x , y , z components are summarized . considering the statistical precision of the gps observations , the geometrical distribution of gps stations and their physical stablility , a new method to determine the parameters of geocenter motion is studied and analyzed . in order to have a better understanding of its effect on the height datum origin , the rule of geocenter motion in the horizontal and vertical components are also analyzed and some useful conclusions are drawn 提出了將譜分析與抗差估計相結合的抗差譜分析方法,并用該方法分析了地心運動時間序列的主要周期特性;為合理地確定地心運動參數,詳細研究與分析了一種新的定權方法對求解地心運動參數的作用,該方法充分利用了gps觀測量的統(tǒng)計精度、點位的幾何分布以及物理穩(wěn)定性;為了明確地心運動導致的高程基準的變化,分析了地心運動對地面點的水平分量和垂直分量的影響規(guī)律。