This school year, the schools shifted from hard cover to electronic textbooks for social studies in its middle and high schools.
本学年，这些学校的初中和高中的社会研究教材从纸质教材转向了电子教材。
This is because middle- and upper- latitude timberlines are strongly influenced by the duration and depth of the snow cover.
这是因为中纬度和高纬度地区的林木线受到积雪存留时间和厚度的强烈影响。
And the White House says the talks at a castle just outside Ljubljana will cover efforts to ease tensions in the Balkans and bring peace to the Middle East.
白宫说，这次在卢布尔雅那郊外一座城堡里举行会晤也将涉及为缓解巴尔干地区紧张关系和实现中东和平所作的努力。
As we lose the ice cover, we start to change the nature of that refrigerator, and what happens up there affects what happens down here in the middle latitudes, "he said."
我们失去冰层时，我们在改变这个冰箱的实质。在那上面所发生的，影响中纬度地区这里发生的事情，“他说。”
Punch a hole in the middle of the paper cover where the hole of the spool is. Now your hole should run through the paper, spool, and cardboard without any obstructions.
在纸片棉线轴洞的位置打个洞，这个洞贯穿了纸片、棉线轴和硬纸板，洞内没有其他遮挡物。
In this part, we'll cover how you can use an external systems model as part of the bottom-up track of the "meet-in-the-middle" approach.
在本部分中，我们将讲述如何将外部的系统模型作为“中间会合”方法的自底向上跟踪的一部分来使用。
Pictures in the 150-photo exhibit and the book, all property of the library, cover the 100-year period from the middle of the 19th century to 1949.
《上海图书馆藏历史原照》大型图录和展出的150张照片，均为上海图书馆馆藏照片，照片是19世纪中叶到1949年的所拍摄的。
Large-diameter hydraulic cylinders, normally retracted, force the two halves of the cover together in the middle to seal the wellbore.
大直径的液压缸，通常是收缩，迫使闸板的两半一起向中间运动去密封井眼。
The potential 'drop zone', however, is estimated to cover a range of more than 60 miles - meaning it could be days before it is found unless it lands in the middle of a village, town or city.
但是，预计钻石可能落地的区域范围有60多公里，这意味着除非这颗钻石正好落在了村庄或城镇里，否则要找到它估计要好几天的时间。
We specialize in finished cotton goods for the Middle eastern market: Our activities cover all types of household linen.
专营精制棉织品，包括各灯家用亚麻制品，行销中东。
The narrator of The Secret History is obsessed with tradition, too, especially those that serve as identity markers, and those that might help him cover up his middle-class background.
《神秘历史》的叙述者着迷于传统，尤其着迷身份标记，因为这样有可能帮他隐蔽自己的中产阶级背景。
Thee narrator of The Secret History is obsessed with tradition, too, especially those that serve as identity markers, and those that might help him cover up his middle-class background.
《神秘历史》的叙述者着迷于传统，尤其着迷身份标记，因为这样有可能帮他隐蔽自己的中产阶级背景。
The distribution configuration of middle-low mountain soil quality mainly depends on the variations between land use and cover, and human activities is the main factor that enhances the variations.
中低山坡地土壤质量的变化特征主要依赖于土地利用与覆盖之间的差异。
The performance of the box-type solar collector was investigated experimentally, the cover of which is a high-vacuum plane glass plate with a middle narrow slot.
用窄缝高真空平面玻璃作普通箱式太阳灶的透明盖板，对箱式太阳灶的集热性能进行了实验研究。
A laminated composite bar of rectangular cross section consists of a middle portion of one material as well as upper and lower identical cover plates of another material.
一矩形横截面的叠层复合材料杆，由以一种材料为中心部分，及另一种材料的上下两相同的盖板所组成。
The utility model discloses a new shaping machine for various sandwich foods, comprising a cover plate, an upper mold, a middle mold, a lower mold, etc.
本实用新型公开了一种新的多种食品夹心成型器，由盖板、上模块、中模块、下模块等部件组成。
Put the lid on. Cover the container with a big plastic sheet and tie it closed with some string or twine around the middle of the container.
盖上盖子。用大塑料布盖住容器，并用绳子将塑料布固定在容器上。
Moreover, the stability of whole structure can be enhanced by reinforcing the areas around the middle-circle beams on the top cover.
此外，可通过加强柜顶的中环梁附近区域来提高结构的整体稳定性。
CONSTRUCTION: It is composed of an inner rubber protection layer, middle rubber layer, steel wire spiral layer and external rubber cover.
结构：由内胶层、内胶保护层、中胶层、钢丝缠绕层和外胶层组成。
These step-by-step topics cover common data scenarios for client and middle tier applications.
这些逐步解说主题涵盖了用户端和中介层应用程序的常见资料案例。
Combined forming characteristics of automobile body components front wheel cover, research middle cut-off to double automobile body components.
结合了车身零件加强板本体前轮罩的成形特点，对对称性采用中间切断的汽车车身零件的修边模具进行研究。
The middle part of the upper cover is provided with a round hole which passes through the upper end of the base and is spirally and fixedly connected with the base.
在上盖中部也制有一圆孔，圆孔穿过底座上端和底座之间螺旋固定连接。
Erik is a former middle school teacher and wrestling coach who has made his way on to the cover of Time, Outside, and Climbing magazines.
这之前艾律克是中学老师和摔跤教练，崭露头角成为时代、户外和攀登杂志的封面人物。
The results show that the maximal stress appears in the fillet which connects the feeding cover and the trunnion, and the minimal stress appears in the middle of the cylinder body.
计算结果表明：左端盖与中空轴的过渡处应力最大，筒体中部应力最小。
The utility model is characterized in that the middle position of the cover surface is provided with at least one convex part.
其特征在于所述的罩面的中间部位设置至少一个突出部分。
The utility model is characterized in that the middle position of the cover surface is provided with at least one convex part.
其特征在于所述的罩面的中间部位设置至少一个突出部分。
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