目的：探讨不同桩核材料背景色对3种全瓷底层材料的颜色影响。
Objective: to study the influence of background color to 3 all-ceramics system core material.
目的：探讨不同桩核材料背景色对3种全瓷材料饰瓷后的颜色影响。
Objective: To study the influence of background color on 3 veneered all-ceramics core materials.
这些背景材料必然会反映出我们是谁。
头两篇提供入门性的和背景性的材料。
The first two chapters provide introductory and background material.
背景材料：这条33.5英里长的铁路隧道连接北海道与本州岛。
Background: This 33.5-mile-long rail tunnel links the island of Honshu with the island of Hokkaido.
这些材料提供了重要的背景知识,以使我们阅读《后先知书》
This material is therefore crucial background to reading the Latter Prophets.
专题的背景材料中已有哪些信息？
What information is already available in the project background materials?
信息给予题提供新颖的背景材料；
The questions with information wi ll offer novel background material.
这是一本书买的图像，为背景材料不是。
This is a book to buy for the images, not for the contextual material.
这是本文主要内容的一些背景材料。
This is the main body of the paper some background of main content material.
以下是一些有用的背景知识和学习材料。
作为室内背景材料，红石艺术砖已经达到了相当高的水平。
As indoor background material, red rock art brick has reached a high level.
论文以大展弦比飞翼布局机翼蒙皮的优化设计为背景，开展了复合材料层压板结构的优化设计工作。
In this paper, an effective design optimization method for High-aspect-ratio composite wing skin is presented.
它有一个半透明的蓝色背景色硬蜡型折射率材料1。
It has a translucent hard wax type refractive material with a bluish back color.
它有一个半透明的蓝色背景色硬蜡型折射率材料1。
It has a translucent hard wax type refractive material with a bluish back color.
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