等时性的

Study on the solution of brachistochrone and the effect of friction;2. Based on physics,it was proved concisely that the cycloid is both brachistochrone and isochronous pendulum.

介绍旋轮线的主要性质及其在日常生活与物理中的一些实例，并结合物理学知识对其最速降线与等时性进行简洁的证明。

The magnet size （here the angle of the magnetic pole was used） modification to eliminate the phase shift was estimated by using a hard-edge approximation to the magnetic field distribution along a circle.

给出了由滑相角度估算磁极张角修正量的方法，根据滑相角度计算磁场沿圆周的平均值与等时性场的偏差；为消除此偏差，将磁场沿圆周的分布做硬边界近似，估算出磁极几何尺寸的修正量。

Some authors proposed that the analyses of transfer cycles of high frequency base level and key surface correlation could be used to correlate isochronal strata.

在前人提出的高频基准面转换旋回分析和关键界面对比分析来确定等时性的基础上，以板中东油田板2油组水下冲积扇沉积为例，就湖盆内事件沉积的特点，提出可以结合洪泛面和事件沉积界面以及异旋回和自旋回来进行高分辨率层序地层的对比研究。

All the information is classified by setting local and action thresholds of those nodes from which a temporary cluster-head is selected for the fusion of all the data acquired, according to the similarity and isochronism of local field data.

算法中网络节点采用了基于事件驱动的响应式路由，通过设置节点的局部阈值和动作阈值，将网络中的信息分类，利用局部数据的相似性和等时性动态选举临时簇首，临时簇首对收集到的数据进行融合。

Supersequence lithofacies palaeogeography maps of Gaoyuzhuang and Wumishan formation in the study area are compiled on condition of supersequence used as drawing unit. This kind of map has some characteristics, such as isochronism, origin continuity and usability. It reveals the characterstic and evolution of lithofacies palaeogeography of different sedimentary period.

论文以超层序为编图单元，编制了研究区高于庄组超层序岩相古地理图4张，雾迷山组超层序岩相古地理图4张，层序岩相古地理图具有等时性、成因连续性和实用性等特点，揭示了不同沉积期的层序岩相古地理及其演化特征。

An approach has been made to high-precision isochronous stratigraphic and reservoir correlations.

解决了高精度的地层和储层等时性对比问题。

There is only one set of exciting coil, and the isochronous magnet field is mainly determined by the shape of magnet pole.

它沿半径方向只用一套线圈励磁，等时性磁场的建立完全由磁极形状决定。

He personally experiment to determine the law of free-fall and found that: The object of the law of inertia, a reasonable law, such as when the pendulum vibration, the law of Motion put forward a campaigns of the principle of relativity, but also on the speed, acceleration and so on kinematics The basic concept of making a strict definition.

他通过亲自实验，确定了自由落体定律，发现：物体的惯性定律、合理定律、单摆振动的等时性、抛体运动规律，提出了运动的相对性原理，还对速度、加速度等运动学的基本概念做出了严格的定义。

This article tries to observe the diachronical and synchronical English writing of India in terms of Indian history, Indian images and cultural identity.

本文从印度历史书写、印度形象变迁、文化身份探索等三个角度入手，对英国作家历时性和共时性的印度书写进行考察。

Using maximum flooding surface and local explosure erosion surface as the correlation framework surface in the 4-th hierarchical base-level cycles, sand-body in the 3-th hierarchical base-level cycles formed in the 4-th hierarchical base-level cycles may be correlated layer by layer. The law of the sand-body and the characters of reservoir heterogeneity formed in the 4-th hierarchical base-level cycles are discussed. The study shows:①During early period of the 4-th hierarchical base-level cycle rising, subaqueous distributary channel formed, continuously stacked vertically, and migrated in limit range laterally, and channel sand-body stretches farther longitudinally, and lacks interbeds of mud rock and siltsand in sand rock, reservoir heterogeneity is relatively weak.②During mid-period of the 4-th hierarchical base-level cycle rising, subsaqueous distributary channel migrated actively, channel divided and converged strongly to form netted sand-body and sand sheet mainly, but interbeds of mud rock and siltsand increases gradually in sand-body, reservoir heterogeneity increased.③During later period of the 4-th hierarchical base-level rising and early period of the 4-th hierarchical base-level falling, reservoir sand-body was poor, and only form thin sand-body of subsaqueous distributary channel, subsaqeuous creveas and distal mouth bar, sand-bodys are surrounded by mud and silt rock.

进一步采用以第4层次基准面旋回中相当最大湖泛面的相转换面和具有区域性暴露侵蚀作用的层序边界面为等时地层对比框架的边界，对发育于MSC2—MSC4三个第4层次基准面旋回的第3层次基准面旋回内砂体进行了逐层等时对比，探讨第4层次等时地层对比格架内储集砂体发育分布规律，及储集砂体的非均质性特点，研究发现：①第4层次基准面上升初期发育的水下分流河道，砂体呈连续叠置、侧向迁移受限，纵向上呈长距离延伸的带状产出，砂体间泥、粉砂岩夹层少，储层非均质性相对较弱；②在第4层次基准面上升中期发育的水下分流河道侧向迁移活跃，纵向延伸过程中分流汇合作用强烈，以形成网状或席状连片砂体为主，但砂体间泥、粉砂岩夹层逐渐增多，储层非均质性增强；③第4层次基准面上升晚期和下降早期，不利于储集砂体发育，仅出现少量薄的水下分流河道、水下决口扇、远—河口砂坝砂体。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。