次
- 与 次 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
Then, have stressed kinds of technology cubic Hermite function and cubic spline function, step by step, expand dual-cubic Hermite and dual-cubic spline function to progressively, sum up in the point that trinary cubic Hermite and trinary cublic spline finally.
讨论时重点突出了三次埃尔米特函数和三次样条函数,表达方式由浅入深,逐步扩展到双三次埃尔米特函数和双三次样条函数,最后归结到三三次埃尔米特函数和三三次样条函数。
-
A new method of obtaining secondary electron yield and secondary Cs〓 ionization probability by detecting target current and primary ion current under Cs〓 bombardment is put forward The dependence of Cs〓 ionization probability on primary ion energy, primary beam current and substrate compositions, as well as the dependence of secondary ion intensity on erosion time during transient period has been studied The mechanisms of secondary ion emission are explained
二、提出了通过测量靶流和一次束流求取Cs〓轰击下二次电子产额和二次Cs〓离化率的方法,实验研究了一次离子能量、束流强度及不同基体对二次Cs〓离化率的影响和瞬态过程中二次离子强度的变化规律,并对发射机理做了解释。
-
Results: Among the 60 cases of chronic cough in children, emycoplasma pneumoniae infection accounted for 24 cases, cough variant asthma 20 cases, tuberculosis 9 cases, postnasal drip syndrome 7 cases, foreign body in trachea 3 cases and gastroesophageal reflux 2 cases.
结果:60例慢性咳嗽中,肺炎支原体感染24例次,咳嗽变异性哮喘20例次,结核感染9例次,鼻后滴流综合征7例次,气管异物3例次,胃食管返流征2例次。
-
Theequivalence percolation resistance law is accurate enough to be used in productivitycalculation of horizontal well pattern.(3) Productivity of mixed well pattern of horizontalwell or multilateral horizontal well and vertical well is constructed and formulae are simpleenough to be used in the oilfield. The patterns include 5-spot pattern,7-spot pattern and9-spot pattern.(4) Productivity formula of united rectangular well pattern of horizontaland vertical wells is constructed. By this formula, the calculation results show that fora horizontal well length, there is a shape factor at which the productivity of the patternis biggest. So optimum method of the well pattern is proposed.(5) A new concept ofdimensionless length of horizontal well is advanced and the relationship of optimum shapefactor of the rectangular well pattern against dimensionless length of horizontal well ispresented. The influences of length of the horizontal well, area of the well pattern unitand the thickness of reservior are concerned.
利用该公式计算表明:当水平井长度一定时,存在一个最优井网形状,使得水平井的产能最大,在此基础上提出了水平井井网的优化方法;(5)提出了水平井无因次长度的概念,给出了联合井网最优井网形状因子与水平井无因次长度的关系式,并对水平井长度、油层厚度及井网面积对产能的影响进行了分析;(6)推导出了一无限水平井井排在XY 平面内势的解析解,为不同水平井整体开发井网或水平井和直井井网整体开发渗流理论的研究奠定了理论基础;(7)建立了交错式水平井与直井整体开发渗流理论,给出了拟三维条件下井网产能的精确解析解及该井网最优井网形状因子与水平井无因次长度的关系,并对产能的影响因素进行了分析;(8)建立了水平井与水平井正排列井网、交错排列井网条件下渗流理论及井网产能在拟三维条件下的精确解析解,给出了交错井网条件下最优井网形状因子与水平井无因次长度的关系,通过与正方形井网对比,说明优化井网可大幅度提高开采效果;(9)建立了分支水平井和直井面积井网水油两相非活塞驱替条件下渗流问题的解析解,给出了见水前后无因次产量与无因次时间的关系式以及见水时间等。
-
There were 613 breaks of ischemia symptomless in which 504 broke while at rest or sleeping, lasting for 3~5min and 88 breaks were symptomatic in which 53 broke while at rest and 25 broke in daily activities, lasting for 1~3 min and there were significant changes of ischemia on DCG and the ST segment descent for 0.1~0.3 mV.
结果:138例患者24h监测发现在所有ST段下移1mm以上的缺血发作701次,无症状发作613次,其中休息和睡眠时发作504次,持续时间为3~5min;有症状发作88次,其中休息和睡眠53次,日常活动时 25次,持续时间为 1~3 min,DCG检测中有明显的心肌缺血表现,ST段降低幅度0.1~0.3mV。
-
Each was 12 times.The temperature in rectum,esophagus and tympanum was detected in turn.Results:Of 11 cases,required mediantime of reaching 40℃ in tympanum,esophagus and rectum was 81 min,81 min and 42 min respectively after heating;Above 41℃,it was 72 min,72 min and 72 min.
结果:经测温显示各部位温度于加温后达40℃以上所需中位时间分别为81(24~84)min(鼓膜7次)、81(24~93)min(食管7次)、42(9~72)min(直肠10次);达41℃中位时间是72(39~96)min(鼓膜4次)、72(42~102)min(食管5次)、72(9~102)min(直肠7次);40℃以上持续时间分别是鼓膜57(36~96)min,食管39(27~96)min,直肠66(48~111)min;各部位最高温度分别是40.4(39.4~41.3)℃、40.4(39.5~42)℃、41.5(39.2~43)℃。
-
This thesis deals with some classes of holomorphic mappings in several complex variables, such as almost starlike mappings of order α, starlike mappings of order α, strongly starlike mappings of order α, spirallike mappings of type β, uniformly starlike mappings, uniformly convex mappings and three other mappings: almost spirallike mappings of type β and order α, spirallike mappings of type β and order α and strongly spirallike mappings of type β and order α, which are defined by us in this essay.
本文主要针对多复变数的几类全纯映射族进行研究,其中包含α次的殆星映射,α次的星形映射,α次的强星形映射,β型螺形映射,一致星形映射和一致凸映射等,另外,还有几类我们自己定义的映射类:α次的殆β型螺形映射,α次的β型螺形映射和α次的强β型螺形映射等。
-
The Waterwheel can supply 1 Mark after they turned Five Times,and supply the second Mark after a Treble Cold Down Time
中间转轮转动5次可计分1次;在2倍时间间隔后才能计第2次分;8。水车转动2次可计分1次;在3倍时间间隔后才能计第2次分
-
The most common causes of failed surgery found in 24 cases were aseptic loosening and peri-prosthetic osteolysis, wear-out of acetabulum was seen in 7, malpositioned prostheses in 6 and postoperative dislocation in 3. Infection and fracture of femoral stem happened in 3 and 2 patients respectively.
最常见的原因是假体松动、假体周围骨溶解,共24例次,其次为人工股骨头引起髋臼磨损7例次,假体置入位置不良6例次,人工髋关节脱位3例次,术后感染3例次,假体股骨柄断裂2例次。
-
To summarize the therapeutic effect and clinical characteristics of repetitive photodynamic therapy for patients with exudative age-related macular degeneration.
回顾分析渗出型AMD患者78例94只眼采用PDT治疗,患者平均年龄68.4岁,治疗次数为132次,平均1.4次,其中22例30只眼接受重复PDT治疗,占治疗总数31.9%。30只眼共进行PDT治疗68次,其中2次22只眼,占73.3%;3次7只眼,占23.3%;6次1只眼,占3.3%。
- 推荐网络例句
-
Plunder melds and run with this jewel!
掠夺melds和运行与此宝石!
-
My dream is to be a crazy growing tree and extend at the edge between the city and the forest.
此刻,也许正是在通往天国的路上,我体验着这白色的晕旋。
-
When you click Save, you save the file to the host′s hard disk or server, not to your own machine.
单击"保存"会将文件保存到主持人的硬盘或服务器上,而不是您自己的计算机上。