radius of protection 中文意思是什麼

radius of protection 解釋
保護半徑
  • radius : n （pl radii ）1 半徑；半徑范圍。2 【解剖學】橈骨。3 （車輪的）輻；【物理學】輻射線；【無線電】徑...
  • of : OF ＝Old French 古法語。
  • protection : n 1 保護，保衛，防禦，掩護，包庇，照顧 （from; against）。2 保護者，防護物 （against）; 〈美俚〉...
  1. The pore throat radius varies quite considerably with the reservoirs of different structures in different oil fields. the hoped - for results cannot be achieved in reservoir protection by applying conventional shielding temporary blocking agent

    不同油田、不同構造的儲層，其孔喉半徑差異較大，常規的屏蔽暫堵劑對儲層保護難以達到預期效果。
  2. Many factors regarding the modifying coefficients of circular and rectangular section are analyzed : ( 1 ) it is theoretically proved that the diffusion coefficient of cl - in concrete is dependent of modifying coefficients ; ( 2 ) through analysis of the results of numerical value calculation, it is discovered that the relation between the modifying coefficients and the thickness of protection layer of concrete is linear, from which the function expression of these two variables is gain ; at the same time, the influence on modifying coefficient of the radius of circular section and the thickness of cl - on the surface of concrete ; based on these, practical calculating method of beginning corrosion time of steel of circular section is set up ; ( 3 ) to rectangular section, the diffusion of cf in concrete is two - dimension diffusion

    討論了影響矩形截面以及圓形截面修正系數的因素： （ 1 ）從理論上證明了氯離子在混凝土中的擴散系數與修正系數無關； （ 2 ）通過圓形截面數值計算結果的分析，發現圓形截面修正系數與保護層厚度基本成線性關系，並建立了二者之間的聯系；分析了圓形截面半徑、混凝土表面氯離子濃度對修正系數的影響，從而建立了圓形截面鋼筋初始銹蝕時間的實用計算方法； （ 3 ）在矩形截面氯離子侵蝕下，混凝土處於二維擴散狀態。本文通過計算分析，證明二維擴散的影響區域從邊角開始向中間逐步擴散，並證明了二維擴散影響區域依賴于氯離子擴散系數與氯離子擴散時間的乘積。
  3. To achieve the objective of protecting reservoir during drilling, the common means is to add proper graded temporary plugging materials, coupled with colloid filling particles in upper drilling fluid based on the average radius of pore throat in reservoir, which converts upper drilling fluid to reservoir protection fluid

    摘要在鉆井過程中，為達到保護油層的目的，通常根據油層的平均孔喉半徑，在上部鉆井液中加人合適粒徑的暫堵劑，再配合膠體填充粒子將其改造為對油層具有保護作用的鉆井液。
  4. One pencil is the simulative milling cutter. parameters setting, milling cutter radius compensation, graphics drawing of the work - piece machined, realizing local control, etc. are the tasks of pc, while line & arc interpolation, motion segment acceleration & deceleration control, position protection at a high precision rate and so on are the duty of dsp motion controller. in the end, the system can draw the cutter center track of the work piece ' s program track accurately

    上位pc機主要完成相關參數設定、刀具半徑補償相關運算及繪制被加工工件的輪廓（程編軌跡） 、實現本地控制等內容；下位機dsp控制器則充分利用美國ti公司的tms320c31浮點dsp的高速度、高精度完成運動控制中的實時直線和圓弧數值插補、運動段加減速控制、運動軸行程限位保護等內容。
  5. In view of the reservoir characters of severe heterogeneity, wide pore radius distribution, unpredictability of pore radius, and unrealized protection for whole hole section and bad protection effect by conventional shielding temporary plugging technology, we designed a broad spectrum oil film temporary plugging drilling and completion fluid system for reservoir protection

    摘要針對油層非均質性強、孔徑分佈范圍較寬、油層孔徑難以準確預知，常規屏蔽暫堵技術幾乎無法實現對整個油層井段的保護、油層保護效果差等特點，設計了廣譜「油膜」暫堵型保護油層鉆井完井液體系，並進行了室內系統評價和現場應用。
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