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The F layer is of most importance for HF communications as it is present during day and night, it is located at the greatest height, and it reflects the highest frequencies in the HF band.

F 层数是多数重要为HF 通信照原样存在在日夜期间，它位于在最了不起的高度，并且它反射最高的频率在HF 带。

According to the viewpoint that the thinnest part of the deforming metal is usually the important and decisive part of the deforming force , the influence of the bridge size of the fash slot on the die forming and the deforming force is analyzed.

通过坯料在模锻型腔中的压挤成形过程，模拟开式模锻中飞边槽对金属充满型腔的作用，根据"变形金属最薄的部分常常是决定变形力的重要部分"这一观点，分析和探讨飞边槽桥部尺寸对模锻成形及变形力的影响，提出对高度较小、直径较大的齿轮以及复杂模锻件设计方法的改进，以提高该类锻件的模具寿命和生产率。

It was wholly in the lower ice, but close against the upper, and was flattish, or perhaps slightly lenticular, with a rounded edge, a quarter of an inch deep by four inches in diameter; and I was surprised to find that directly under the bubble the ice was melted with great regularity in the form of a saucer reversed, to the height of five eighths of an inch in the middle, leaving a thin partition there between the water and the bubble, hardly an eighth of an inch thick; and in many places the small bubbles in this partition had burst out downward,and probably there was no ice at all under the largest bubbles,which were a foot in diameter.

在气泡之下和周围已经结了一层新的冰，所以气泡是在两片冰的中间；它全部是在下层中间的，却又贴近上层，扁平的，也许有点像扁豆形，圆边，深四分之一英寸，直径四英寸；我惊奇地发现，就在气泡的下面，冰溶化得很有规则，像一只倒置的茶托，在中央八分之五英寸的高度，水和气泡之间有着一个薄薄的分界线，薄得还不到一英寸的八分之一，在许多地方，这分界线中的小气泡向下爆裂，也许在最大的直径一英尺的气泡底下完全是没有冰的。

Fluoroform is one of the most significant stable molecules of greenhouse gas in atmospheric physics. The Global Warming Potential of this molecule has risen to prominence. It has been of great interest to physicists and chemists.

CHF_3是大气物理温室气体中最重要的分子之一，它的全球变暖潜能非常突出，受到物理学家和化学家的高度重视。

Stretching lineations may be difficult to quantify, especially in highly stretched ductile rocks where minimal foliation information is preserved.

拉伸线可能难以量化，特别是在高度紧张情况下韧性岩最小理资料保存。

The greatest height of footwall cutting is determined through the theoretical analysis of cut-off grade method and breakeven point method.

通过对边界品位法及盈亏平衡法的理论分析，确定下盘最大切岩高度。

Economy: One of the world's poorest countries, highly dependent on foreign aid.

经济：世界上最贫穷的国家之一，高度依靠国外援助。

Sylvie Fortin has announced Marketers Pledge teleseminar with highly successful online marketers to answer some of the most burning questions on the minds of aspiring business owners.

sylvie佛汀已宣布营销teleseminar的承诺，与高度成功的在线营销，以回答一些最紧迫的问题，心中有抱负的企业主。

It is 10 meters high and 20 meters long, which is the second longest dinosaur fossil in the world.

它是 10 公尺个高度和 20 公尺长的，是第二个世界的最长恐龙化石。

There are two main indexes in the quota system of data of 10 thousand luck can the change that high detail spends the ground to mirror a netizen to pay close attention to a dot: It is the analysis of the behavior that browse that brings by search engine keyword in the each website quantity that browse, 2 it is an user most frequentation asks content the analysis.

在万瑞数据的指标体系中有两个重要指标能够高度细节化地反映出网民关注点的变化：一是各网站浏览量中由搜索引擎关键词带来的浏览行为分析，二是用户最常访问内容分析。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。