As geologists, we examine layers of sediment on the Earth' s surface to approximate the dates of past geologic time periods.
作为地质学家，我们研究地球表面的沉积层以估算过去地质时期的年代。
That means you need your vector field to be continuous and differentiable everywhere on the surface s.
也就是，向量场是连续的，且在曲面s上处处可微。
So, s is actually this whole closed surface here.
那么，S实际上是这个完整的封闭曲面。
Let's say that we are given a parametric description — of a surface s.
比方说已知，曲面s的参数形式。
Self_incompatibility in Brassica is controlled by a single multiallelic locus (designated as S locus) that is responsible for pollen recognition on the stigma surface.
芸薹属植物自交不亲和性受单一位点的复等位基因控制，此位点命名为S位点。它决定柱头表面花粉识别的专一性。
The object 's surface often possesses some particular geometric continuities such as the continuity of position, of the tangent plane and even of curvature.
实体的表面一般都具有一定的光滑性，比如位置连续、切平面连续甚至曲率连续。
The synthetical results show that skew spindle high pressure finishing is proved to be an ideal technology to improve large and middle size disc_type part′s surface and performance.
研究表明，叉轴式强力滚磨加工技术是改善大中型盘类零件表面质量、提高使用性能的理想工艺。
Response surface method was used to optimize the MRS-based enrichment medium of s.
采用响应面方法对唾液链球菌嗜热亚种增殖培养基进行了优化。
To improve BEV′s effect, the surface built by contours was melted into digitally reconstructed radiographs (DRR) by applying image fusion.
为增强其效果，现通过图像融合，将轮廓线构建的三维表面图像融入到DRR中。
From an important Angle of review, Chomsky s deep structure and surface structure theory explains the possibility to make translation between source language and target language.
乔姆斯基关于语言的深层结构与表层结构的观点，是考察不同语言为什么能够相互翻译的一个重要视角。
A new device for measuring run out error of needle valve seat′s cone surface is proposed. The calculating and estimating methods of the error are also described in the paper.
推出了一种新的针阀体座面圆跳动误差测量装置，介绍了误差的计算与评定方法。
In this paper, the xenon lamp radiation light beam surface hardening technology, which was developed abroad in the early 1990's, was summarized.
本文介绍了国际上90年代初新兴的氙灯辐射聚焦光束表面强化技术。
S is isometric to a surface of revolution.
与一个旋转曲面是等距对应的；
SpaceShipOne will fly 100km (62 miles) above the Earth"s surface, just breaking through the planet"s atmosphere.
“太空飞船一号”将会在距离地球表面100千米（62英里）的上空飞行，这个高度刚刚超出地球的大气层。
Performance of surfactant can be got by pure analysis and experiment, which explores surfactant' s critical micell concentration, surface tension and coal's contact angle.
通过对表面活性剂表面张力、临界胶束浓度及溶液对煤体接触角的理论及实验分析，得到表面活性剂的性能指标。
This test shows that it is a simple and non-destructive method to determine surface brittle cracking sensitivity by Vicker′s hardness method.
说明了维氏硬度压痕法是一种测定表面开裂敏感性简便易行的方法。
The sliding surface of s type angular contact spherical plain bearing inner ring is a non -symmetrical spherical surface.
型角接触关节轴承内圈的滑动表面是不对称球面。
Viewfactor calculation of perforated surface is a problem that is often raised in satellite′s temperature calculation.
为了计算卫星内部的温度，经常需要计算有孔曲面之间的角系数。
The effects of surface roughness at different areas of the seal faces on the performances such as gas film stiffness and leakage rate of a S-DGS were studied.
结果表明：密封端面各区域表面粗糙度对密封性能的影响规律各不相同，并且转速对表面粗糙度与密封性能的关系产生影响；
Wet spraying pellet was used to improve the surface' s strength and stress corrosion resistance of the workpiece.
采用液体喷丸方法提高零件表面强度及抗应力腐蚀能力。
The S-N curves for internal fracture mode are not affected by surface conditions, which is an inherent characteristic of the material.
内部破坏模式的S - N曲线不受表面条件的影响，是材料固有的特性。
The user material subroutine UMAT provided by the general software ABAQUS was used for programming for Shenzhujiang s double-yield surface model of earth rockfill materials.
利用ABAQUS提供的用户材料子程序UMAT的二次开发平台开发土石料的沈珠江双屈服面模型，并以一面板堆石坝为例，结合ABAQUS的“单元增加/去除”技术进行了坝体施工和水库蓄水的仿真分析。
One is called the S-N curve of surface fracture mode. It is governed by a crystal slip on the specimen surface, which occurs in the region of short fatigue life and high stress amplitude level.
一组叫做表面破坏模式的S-N曲线，它发生在高应力幅短寿命区，是由试样表面晶体滑移引起的。
On a process of identifying the sea surface target by using D-S evidence theory, the method of how to determine basic probability assignment (BPA) by measured data of sensor is studied.
在应用D S证据理论识别海面目标的过程中，重点研究了如何通过传感器数据实测值来确定基本概率分配函数（BPA）的方法。
On a process of identifying the sea surface target by using D-S evidence theory, the method of how to determine basic probability assignment (BPA) by measured data of sensor is studied.
在应用D S证据理论识别海面目标的过程中，重点研究了如何通过传感器数据实测值来确定基本概率分配函数（BPA）的方法。
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