datum dimension 中文意思是什麼
datum dimension
解釋
基準標注-
Analyze item by item the position of unintact cycle, the running clearance of unintact cycle, locking - deform, datum dimension regulating, repeatly install, power voltage wave and marking running etc. at the same time, we give the calculating formula to calculating the running marking random error, and use it to calculate the system error of big diameter measure instrument - - datum dimension frame error, gyro - wheel diameter error, error caused by circumstance temperature, error caused by backing distance, angle error, delay error of data collecting circuit, lathe main shaft running error, workpiece install partial error
對不完整圓的位置、不完整圓的轉動間隙、鎖緊變形、基準尺調整、重復安裝、電源電壓波動、標記轉動等隨機誤差進行了逐項分析，並給出轉動標記隨機誤差的計算公式。對大直徑測量儀的系統誤差?基準尺尺架誤差、滾輪直徑誤差、環境溫度引起的誤差、後退距離引起的誤差、角度誤差、數據採集電路延時誤差、車床主軸回轉誤差、工件安裝偏心誤差分別進行了計算，最後對誤差進行合成。 -
Especially, the idea of " datum dimension precision back " is being put forward, and this idea is being realized by backing composition composed by outer - diameter micrometer, airproof shafting, microwatch. at the same time, use " non - lock " to replace " lock ", this way make the system compact, eliminate many bigger error and resolve th
尤其是提出了基準尺調整后精確後退的思想，並通過外徑百分尺、密珠軸系、千分表組成後退機構加以實現。同時以「無鎖」代「鎖」 ，使系統結構緊湊，受力小，消除了多項較大誤差從而解決了測試精度低的關鍵問題。 -
Thereinto forecasting of water requirement is the datum basic and critical condition of multi - dimension critical adjustment model ; revival and critical cybernetics of water resources is its theory gist ; distribution project of water resources is basic gist of scientific and rational distribution in every province
其中需水預測最終為多維臨界調控模型提供數據基礎和邊界條件；水資源可再生以及臨界控制理論研究為多維臨界總控模型提供理論依據；分水方案是各省區科學合理配水的基本依據。 -
The paper selects the subject entitled " the isoparametric finite - element three - dimension groundwater ( fe3dgw ) model for fracture - karst water resources and numerical simulation in jinan springs zone ", which is one sub - task of items on " exploitation and springs protection of jinan fracture - karst water ( no. 200001 ) " in this paper, the following questions are discussed : first, according to the site survey, and other relative datum, the condition of physical geography, geography and hydrogeology are summarized
本文的研究課題? ?濟南市巖溶地下水數值模擬研究是山東省計委計劃項目「濟南市巖溶地下水開發利用與泉群保護研究（ no . 200001 ） 」的子課題。主要研究內容有：第一，在調查和閱讀分析相關資料的基礎上，概要總結和闡述泉群研究區域的自然地理、水文地質條件和地質概況，提出研究區水文地質概念模型，進一步建立濟南泉群研究區非均質各向異性三維非穩定流數學模型，利用等參有限元技術進行數值求解。 -
The mostly content in this paper include the law of the influence upon the effective stress coefficient worked by the holes configuration which comprise the holes rate and the hole distributing, and the law of the influence upon the effective stress coefficient worked by the cracks configuration in rock which comprise the amount of cracks and the cracks distributing. by numerical value experiment, the variety laws of the effective stress coefficient worked by the cracks distributing, by the fractal dimension and the initial value have been work out. by referring to the formerly physical experiment datum and conclusion, the thesis has studied the influence upon the effective stress coefficient worked by the outside pressure and the liquid press inside rock and sum - up the variety law of the effective stress coefficient with the outside pressure and the liquid press
本文的主要內容包括：巖體孔隙裂隙結構對有效應力系數的影響規律，即：一是孔隙率大小及分佈形態對有效應力系數的影響規律，二是裂隙的條數和分佈形態對有效應力系數的影響規律，並得出了裂隙的分形參數，即：分形維數和裂隙初值的變化對有效應力系數的影響的相關規律，同時也搞清了裂隙分佈形態對有效應力系數的影響規律；參照已有的物理試驗結果，分別研究了巖石所受的圍壓和孔隙流體壓力的變化對有效應力系數造成的影響，從細觀的角度揭示了有效應力系數隨二者的變化規律。 -
On the basis of request to untouch measure online, this paper put forward the method of " datum dimension precision back ", and then the mathematics model is being established
測試精度要求達到國家標準it6級。基於在線非接觸測量的要求，本論文提出了基準尺精確後退的想法，並以此建立數學摸型。
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