查询词典 datum level

You can use a datum axis to create datum planes, to place items concentrically, or to create radial patterns.

你可以利用一个坐标片面作为你的草图的参考特征，或者是建立和定位的依据。

The recognition of datum plane cycle is the basis of high resolving power of sequence stratigraphy, because the formation of sequence and superimposed styles of inner sequence are controlled by datum plane cycle.

基准面旋回控制了层序的形成及其内部地层的叠加样式，因此，基准面旋回的识别是高分辨率层序地层学分析的基础。

In order to achieve accurate straightness measurement, the key to the question is to remove or reduce all kinds of errors which influence the stability of the datum line so that a stable datum line can be gotten.

论文中通过对现有直线度测量方法的分析认为，要实现高精度直线度测量，其关键是必须消除或减小影响基准直线稳定性的各种误差因素，从而建立一条高度稳定的空间基准直线。

An inspection method based on computer vision which can make road marking to track datum line was put forward, and the relevant datum line inspection device which can send out hint was developed.

提出了一种基于机器视觉的道路划线车跟踪基准线的检测方法，并开发了相应的基准线检测装置，当划线车跑偏时能够给出提示。

In CDM project, datum line setting is problem of a core, but the practice that still does not have unified, authority domestic and internationally to datum line setting at present, setting method is more confused, u.N.

概要： 清洁发展机制是一种促使各行业实现节能减排的有效方法，而水泥生产一直是我国能源消耗和污染物排放的大户，假如能开发和申请CDM项目，将会给水泥行业带来良好的环境效益和显著的经济效益。

Instead of using the middle-plane as the datum plane, the surfaces of the cavity are used as datum planes in this paper.

通过实验验证了这种表面模型能够处理由流行 CAD系统生成的复杂型腔模型

It is important and difficult for isochronous correlation datum of fluvial facies stratum in exploration and development of petroleum, while high resolving power of sequence stratigraphy based on the datum plane cycle is an additional feasible technical method for it.

河流相地层的等时对比一直是油气勘探开发的重点和难点，而基于基准面旋回的高分辨率层序地层学则为此增添了行之有效的技术手段。

Establishing datum plane is the base assessing surface parameter. It is important to set up perfect datum plane in engineering measurement as well as geometry parameters' shape and positional error inspection.

基准平面的确立，是进行表面参数评定的基础；建立理想的基准平面，在几何量形位公差检测及相关工程测量方面具有重要作用。

The task selects the up to the minute mesoscale numerical model as our forecasting model and use thrice fixed nesting and terrain datum of down to dale (highest precision data of 30s) as our terrain datum in the endothecium.

本文选择了当今最为先进的中尺度数值模式MM5V3作为数值预报模式，采用三层固定网格嵌套，选用其最新提供的30S高精度资料作为内层重点考察小区的地形资料。

Using the annual ring datum of elm nearby Lubei Town of Jarutqi, Tongliao City, established the length for 97 years elm standard timeline, according to the standard timeline and the hydrometeorology datum of Lubei area, analyzed the relationship between the elm growth and the hydrometeorology factor.

利用科尔沁沙地通辽市扎鲁特旗鲁北镇附近榆树树木年轮资料，建立了长度为97 a的榆树标准年表，通过标准年表和鲁北地区水文气象资料相关，分析了榆树生长与水文气象因子的关系。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。