基准面

More and more research proves that alluvial fan is affected by many environmental factors such as tectonic activity, climatic conditions, base level change, drainage basin geology, geomorphology and plant covering of drainage basin, human activities; therefore, alluvial fan research bears great significance to theory of geomorphology and practicalities.

越来越多的研究表明，冲积扇的演化受构造、气候、基准面、流域地质地貌条件、植被覆盖程度以及人类活动等诸多环境因素的影响，因此，冲积扇研究具有十分重要的理论意义和现实意义。

Therefore, we just supplement and improve the use of altimeter setting and the datum level as used by the aerodromes where the transition height or the transition altitude and transition level have been set up in the Administrative Rules on Air Traffic of China's Civil Aviation.

鉴此，只对《中国民用航空空中交通管理规则》有关高度表拨正值的使用，以及划设过渡高或者过渡高度和过渡高度层的机场使用的基准面进行补充和完善。

Guided with the theory of high resolution sequence stratigraphy and based on previous research results,we constructed sequence stratigraphic scheme of Qingshankou Formation which was in front zone of the west slope in southern Songliao Basin,where six sequence boundary surfaces were identified and 5 mediumterm baselevel cycleswere divided.

在前人研究的基础上，应用高分辨层序地层学理论与研究方法，对松辽盆地南部西斜坡地区的青山口组地层进行了层序地层划分与对比工作，从中识别出6个具等时意义的层序界面，将其划分为5个中期基准面旋回（4级层序）。

The four-divided system tracts in a complete terrigeous sequence were sedimentational response to accommodation change resulting from a sedimentary baselevel cyclicity.

陆相层序四分体系域是一个沉积基准面旋回所引起的可容空间旋回性变化的沉积响应。

In this paper, the upper member of Eh〓, Shuanghe ～ Zhaoao area, Biyang basin, is treated as a case to study outer and iuner configuration of terrigenous sequence, based on the synthetical analysis of seismic, core, welllog and geological data. Using computer simulation technique of quantitative sequence stratigraphy, accommodation diagram, and baselevel analysis theory, the controling factors. formation, and procedure-responsed mechanics of terrigenous sequence are discussed.

文中以双河～赵凹地区下第三系核三〓段为例，综合利用地震、钻井、测井、地质等资料，剖析了泌阳断陷陆相层序外部构型和内部构型；采用定量层序地层学计算机模拟技术、可容空间图解方法及沉积基准面分析原理，探讨了泌阳断陷陆相层序控制因素、形成机理及其过程—响应机制。

Integration of digital variation curves of base level and seismic data can calibrate and correlate the stratigraphy exactly.

将数字化的基准面变化曲线与地震资料密切结合可准确进行地层标定与对比。

D. by the same datum plane, which collected from Yulin tidal gauge station located at South Coast of Hainan Island, this paper researches by manifold statistical analyses and reveals that the relative sea level along south Coast of Hainan Island is rising at the rate of 0.64mm/a during the past 40 years.

根据海南岛榆林验潮站 1 95 4～ 1 992年连续 39a潮位观测资料，经过统一基准面校正后，运用多种统计分析方法研究，得出近 40 a来海南岛南岸的相对海平面变化呈上升趋势，相应的平均上升速率为 0 。6 4mm/a。

A sight on a quadrant or compass.

与水平面或者基准面成直角。

In the light of the theory on modern river system capture, it had been south- confluence structure in the east of Block 4, Tahe Oilfield. Then, the base level of erosion had declined in the northwest, and the north border of south-confluence drainage basin was captured by underground way, so the inverted river was builtup.

借鉴现代水系袭夺理论，证实了塔河油田四区东部岩溶流域早期为南向汇流结构，而后期由于构造运动引起西北部侵蚀基准面下降，并通过地下途径对邻近南向流域北缘进行逐步袭夺，形成了大型倒淌河，再现了本区岩溶古水系及流域的阶段性演化过程，从而为揭示塔河油田奥陶系古岩溶发育规律提供了重要的依据。

It contains cofferdams bottom manufacture, installation, level transmition, precise positioning, sinking to the rock and finishing measure.

包括大型双壁钢围堰的底节制作、拼装接高、基准面传递、精密定位着床、吸泥下沉至着岩、清基及竣工测量。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。