That stands for the surface area element on this surface.
它表示曲面上的面积元素。
For the surface, pick the Pen Tool and draw a path around the side panel as shown in the image below.
在表面上，使用钢笔工具绘制一个如下图一样包围侧板的路径。
A crystallographic model has been presented for the surface roughness modelling of thin sheet rolling.
提出了晶体学模型来研究多层薄膜滚压的表面粗糙度。
A low energy, self-shielded electron beam machine for the surface coating curing of wood panel and gypseous plate was introduced.
本文初步描述了利用低能自屏蔽电子帘式加速器固化木器涂料和石膏板表层涂料的生产工艺。
Only thing left to do is Adjust the? Layer Opacity to control the intensity of the reflection. That's it for the surface reflection!
唯一剩下要做的就是修改层的透明图来控制层的反射强度。这就是表面反射！
On this basis, various factors which caused the surface subsidence are analysed and this is valuable for the surface subsidence control.
分析了该区地面沉降的内因和外因，为区内地面沉降的防治提供了依据。
It is considered that the temperature fluctuation of meniscus is a key factor for the surface defect formation of continuous casting billets.
据此认为，连铸弯月面温度波动是导致铸坯表面缺陷产生的一个重要原因。
Modifying the pathway discharge for the surface yard drain containing tritium to allow accurate flow rate measurement and representative sampling.
修改项地面排放含氚的路径以使得流量计量准确和采样更具代表性。
An evaluation system for the surface quality of magnesium alloy die castings was established based on an automobile cylinder head cover component.
建立了一套汽车发动机缸盖罩盖镁合金压铸件外观质量的评定系统。
There is previously no perfect evaluation criterion that can satisfy the needs of the engineering and research for the surface deflection of automobile outer panels.
汽车覆盖件现有的面畸变评价指标均有一定的局限性，难以满足工程实践和理论研究多方面的要求。
The results show that high content of impurity elements, segregation along grain boundaries and uneven grain size are main reasons for the surface damage of domestic tungsten targets.
结果显示，杂质元素的含量偏高和沿晶界的偏析以及不均匀的钨晶粒是造成国产钨靶表面损伤的主要原因。
The method of arc-length parameter space provides a good solution for the surface grid of complex geometry contour, and establishes the foundation for the further analysis carried out.
该方法为具有复杂几何外形的物体表面网格的生成提供了一个便利的途径，也为进一步生成三维空间网格奠定了基础。
Employing abrasive machining for the form of the gear and intellective-control carburizing and quenching technology for the surface, the gear is with high intensity, strong tenacity and wearability.
齿轮齿形采用磨齿加工，齿面采用智能控制渗碳淬火技术，齿轮的强度高、韧性和耐磨性好。
For one thing, the presence or absence of moisture is affected by the special qualities of the urban surface.
一方面，湿气的存在与否受到城市表面特殊性质的影响。
El Nino, Spanish for "the child", occurs when surface ocean waters in the southern Pacific become abnormally warm.
“ElNino（厄尔尼诺）”在西班牙语中是“孩子”的意思，当南太平洋表层海水异常变暖时，会出现厄尔尼诺现象。
He burst to the surface, straining for air.
他冲出水面，使劲吸气。
He came to the surface of the water gasping for air.
他浮出水面急促地喘着气。
For this reason, Chang'e 4 will study the effect of solar winds on the lunar surface and any mineral found by the spacecraft.
出于这个原因，嫦娥四号将研究太阳风对月球表面的影响，以及航天器发现的任何矿物。
Other researchers go even further, suggesting that the data provide evidence for large open expanses of water on the early Martian surface.
其他研究者取得了进一步成果，他们认为，这些资料证明了在早期的火星表面上存在大片开阔的水域。
As on the Moon, the extent of large impact cratering serves as an age indicator for the Martian surface.
和在月球的一样，大型撞击陨石坑的范围之广可以显示出火星表面的年龄。
As on the Moon, the extent of large impact cratering serves as an age indicator for the Martian surface.
和在月球的一样，大型撞击陨石坑的范围之广可以显示出火星表面的年龄。
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