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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
During the overlap time between the natural and artificial photoperiods they were released for training flights to familiarize them with an area while living in a "permanent shift".
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Similarly, in the case of current commutation, the voltage error during the overlap-time of the forward IGBT depends on the load current direction.
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To prevent an open circuit, the current commutation must prepare the overlap-time between turn-on and turn-off of the forward current switches.
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Taking into account the overlap time delay, the required oscillator duty ratio is 66%.
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Too slow clock drivers result in a too short overlap time.
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| | The differences of grain filling on sink basis and the related physiological aspects of some two-line rice crosses were studied with a three-line cross Shanyou 63 as control,using Logistic growth equa- tion,W=A/(1+Be~(-kl)),to simulate the filling processes,in combination with the analysis of the dry mat- ter production after heading.The results were:(1)the great differences of the strong and weak sink filling processes were observed between the Ⅰ and Ⅱ branches of a panicle for all tested crosses;the overl... | | 采用 Logistic 生长方程 W=A/(I+Be~(-k■)拟合若干两系杂交稻不同枝梗颖花单位库容的灌浆过程,结合抽穗后的群体物质生产分析,研究组合间的灌浆差异及其生理原因.结果表明:(1)供试组合Ⅰ次和Ⅱ次枝梗之间均存在明显的强弱势灌浆差别,两者灌浆线性期重叠时间长达8-11d,粒位间的营养竞争是普遍存在的.(2)大库容组合可以提高结实期群体叶片的净同化率,发挥叶片的光合潜能.但光合面积较小,库源比仍明显偏大,这是其总体灌浆速率较低、枝梗间差异更大的主要生理原因.(3)不同组合Ⅰ次枝梗前期都具有较强灌浆势和较快启动灌浆的能力,表现营养竞争上的绝对优势.因此组合间其最后库充实率差异之大,可能与颖花机能性障碍的比例多少有关,此外还涉及后期物质转运功能上的差异. | | 文摘来源 | | Simulation techniques provide a feasible way of system prototyping and performance evaluation for parallel systems.With the task dependent simulator clock and the overlapped timeslice,this paper presents a multitasking model which supports pure parallelism and user concurrency.Combined with the simulation experiments on various scheduling algorithms and several interconnection networks,the effect of the task scheduling algorithm and the communication overhead are analyzed in particular.Moreover,the concurre... | | 并行处理仿真为并行系统的建模分析、并行算法的模拟执行以及并行环境的性能评价提供支持.本文利用任务相关仿真时钟和重叠时间片建立了一种支持完全并行和用户并发方式[1]的并行多任务模型,并结合对不同调度算法和互连结构的仿真实验,着重分析了任务调度对系统性能的影响以及互连网络技术与通信开销的关系.同时,仿真环境还提供模拟执行的并发度曲线和任务执行踪迹供用户分析调试并行程序. | | 文摘来源 | | To fix the focal point of medical work and health care work in the hospital and provide basis for scientific managment,the dynamic statistics of 1007 inpatients in the internal medicine department in the two years of 1995 & 1996 are analyzed and compa red in this summary.It is shown that,in the light of the classification of morbidity system,the number of inpatients with respiratory diseases takes first place,with circulatory diseases takes second place,and with digestive diseases takes third palce.Comp... | | 为确定本院医疗卫生保健工作的重点和科学管理提供依据,本文对1995、1996年两年内科住院病人1007例进行动态统计分析比较。结果两年住院病人按疾病系统分,呼吸系统疾病占首位,循环系统疾病次之,消化系统疾病居第三位;1996年非内科疾病(含诊断不明疾病)人数比95年减少4.47%。两年复诊率统计比较差异无显著性(χ2=0.34,0.5<P<0.75)。住院病人年龄以60~70岁为主,男性多于女性。两年疾病高峰重叠时间在5、6、12月;全年呼吸系统疾病高峰在12月;循环系统疾病在1月;消化系统疾病在7月。 | | 文摘来源 | |   | | << 更多相关文摘 |
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