在科学选址的基础上，对海岸线（岛屿基准面，明礁和灯塔）的定义更加明确。
The definition of the coastal line (datums of island, uncoverd neaf and lighthouse) is more clarified on the basis of scientific location.
测压水头亦应从同一基准面算起。
The piezometric head is also measured from the same datum level.
上反角，机翼基准面与水线之间的夹角。
DIHEDRAL, the Angle between the wing reference plane and water line.
井曲线基准面校正。
沉积基准面旋回变化控制着陆相层序地层的形成与演化。
Changes in depositional base-level cycle control the development and evolution of sequence stratigraphy.
现代排泄基准面以下深岩溶的类似特征则至今研究尚少。
However, similar characteristics of deep karst below the present drainage datum plane are less studied up to now.
沉积基准面旋回变化控制着陆相层序地层的形成与演化。
Depositional base-level cycle controls the development and evolution of sequence stratigraphy.
基准面下降，展布范围增大，并出现新的扇三角洲朵体。
When the base level descends, range of distribution increases and new fan-delta lobes appear.
这个椭球面的中心和方位就构成了我们所说的大地基准面。
The center and orientation of the ellipsoid is what we call the datum.
长期基准面旋回是该区建立高分辨率层序地层对比格架的基础和关键。
According to the long-term stratigraphic base-level circles, the high-resolution sequence (stratigraphic) correlation framework of the depression can be established.
基准面有三个不同的概念，即侵蚀基准面、沉积基准面和地层基准面。
There are three different conceptions about base-level that are base level of erosion, base level of deposition and stratigraphic datum, respectively.
为区别另一套圈的基准面，允许在该套圈的的非基准面上标工艺标志。
Another ring for the difference between the base-level, allowing the ferrule at the base of the non-standard technology of surface markers.
如轨道基准面、道渣厚度、轨道平直度等不合格，塔机运行晃动或歪斜；
Such as track datum, ballast thickness, flatness of the track is not qualified, the tower crane swing or skew;
以经食道矢状位切面为基准面，观察心脏主要结构在放射状切面上的变化。
Based on the transesophageal and sagittal plane, we observed the changes of the major cardiac structures on the radial plane.
基准面在更高的层层连接这两个商店的概念，而在地上作为单独的实体商店。
With the idea of the datum plane linking the two shops at a higher level, the shops are actually conceived as separate and independent entities on the ground.
试验结果表明，采用水平基准面两步法静校正，时间剖面反演深度误差最小；
The results were as follows. The horizontal datum and two-pass statics method gave minimum depth error on time section.
通过岩心标定测井，建立其基准面旋回的测井响应模型并划分中期基准面旋回；
The well log response model of the datum cycle is developed through core calibration and well logging, classifying the middle-term cycle of datum level.
讨论了短期基准面旋回层序的各种结构类型和沉积动力学过程与地层响应的关系。
In this paper, various types of structure and the relationship between sedimentary dynamic process and strata response of the short cycle sequences is discussed.
实际上浮动基准面还是水平基准面，只是不同CMP的水平基准面高程可以变化。
Actually, floating datum is still horizontal datum, but the datum elevation of different CMP is variable.
通常以椭球面作为计算基准面，而测量得到的直线距离不能直接用于椭球面计算。
An ellipsoid is usually chosen for data processing since observed space distance could not be used directly.
本文叙述以液面为基准面，用小型氦-氖激光器在空间建立激光垂直线的简易方法。
This article gives an easy way in which laser plumb line is set up by means of He-Ne laser in space with the liquid level as the base.
基准面及可容空间变化分析，有助于对层序内部结构的认识和层序的正确识别与划分。
With the analysis of base-level and accommodation space change, we can understand the internal structure of sequence better, recognize and classify sequences more accurately.
在作偏移处理时，一般要求偏移基准面是水平的，且偏移的零点应在激发和接收的地表。
In migration processing, we usually require that migration datum is horizontal and that zero point for migration should be on the ground surface on which shot point and receiving points lie.
基准面的变化是构造、气候的函数，对于地史时期的滨海盆地，基准面就是相对海平面。
Base level was the function of tectonic movements and climate circles, and base level for coastal basin in geological history was relative sea level.
本文还讨论了各种深度基准面改正数在浙江沿海的分布场，并调绘了各改正数的分布图。
We have also discussed the scatter fields about correction of sounding data and have drawn their scatter diagrams along the Zhejiang coast.
近代历史海图数学基础的转换；浙江海区近代历史海图的平面坐标改正和深度基准面改正。
The transformation on mathematical basis of modern historic chart, the correction of the horizontal coordinate and depth data on the charts for the waters off Zhejiang coast are elaborated.
在基准面重建时，利用CRS运动学波场参数可将CRS叠加剖面校正到一选定的水平面上。
The CRS-stacked zero-offset section can be corrected (redatumed) to a given planar level by kinematic wave field attributes.
本文从理论上论述了复杂地形条件下常规基准面静校正和存在的误差以及存在误差的主要原因。
The present paper deals with the errors existent in routine datum plane statics under the condition of complex topography as well as the cause for the errors.
根据特征元素树创建了基准面和基准坐标系，使我们很方便的在需要参照基准的时候来选取它。
According to feather element tree, the base level and base coordinate system are created, then we can choose them when we need them at any time.
根据特征元素树创建了基准面和基准坐标系，使我们很方便的在需要参照基准的时候来选取它。
According to feather element tree, the base level and base coordinate system are created, then we can choose them when we need them at any time.
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