面壳

Course of the largest span cylindrical shell in Asia. It is proved to be effective and applicable.

最大跨柱面网壳的施工中并取得了圆满的成功，证明了这项新技术的正确性和实用性。

In the single crystal of C60 with a FCC structure,positron mainly appears outside the C60 molecule.The main annihilation space is the interspace between molecules.The calculated positron bulk lifetime in C60 is 352ps, which agrees with experiment value of 356ps in literature.In carbon nanotube bundles with different dimeters,as the diameter of carbon nanotubes increases,the main space where positron appears changes from the interspace of carbon tubes to the space inside carbon tubes,the radio between positron annihilation with valence eletrons and core eletrons becomes larger,the positron bulk lifetime in carbon nanotube increase rapidly first and come to be a constant at the end.The calculated positron lifetime of carbon nanotube with a dimeter of 0.8～1.6ns is 332～470ps,which agrees with the experiment value of 394ps.Positron annihilation has been studied in widly used compound semiconductors.

计算结果表明：在片层结构的石墨晶体中，正电子主要在石墨层间的空隙中湮没，计算出的石墨中的正电子寿命为208 pS，与文献中的实验结果215 ps符合很好；在金刚石单晶中，正电子主要在碳原子之间的空隙中存在并发生湮没，计算出的金刚石中的正电子寿命为115 ps，文献中的实验结果110 ps左右符合；在面心立方结构的C60晶体中，正电子主要在C60分子球壳内外侧及分子之间存在，C60球形分子中心正电子分布很少，正电子的湮没区域集中在C60分子之间的空隙区域，计算出的C60中的正电子寿命为352 ps与文献中的实验结果356ps相符合；对于不同管径碳米管束中的正电子分布，随着碳纳米管直径的增加，碳纳米管束中的正电子由主要在碳纳米管管间的区域出现转变为主要在碳纳米管管内中心的区域出现：碳纳米管束中的正电子与碳原子的价电子的湮没概率变得越来越大，与核心电子的湮没概率变得越来越小；碳纳米管束中正电子的湮没寿命先迅速增大，而后趋于一定值。

All of materials come from natural, such as plant shell, time new roman, dregs, farina.

生产原料为天然废弃物，如谷壳类、废渣类、淀粉类等，适用面广，选用不同的材料进行生产。

All of material come from natural, such as plant shell, time new roman, dregs, farina.

生产原料为天然废弃物，如谷壳类、废渣类、淀粉类等，适用面广，选用不同的材料进行生产。

The vibration of gear case is further calculated with the excitation oweing to the fluctuation of gear load.

以齿面动载作为激励，本文进一步研究了齿轮箱壳的振动响应。

Dominant species were comprised of mainly micro- and meso-zooplankton species and planktonic larvae of benthos such as Parvocalanus crassirostris, Cirripedia nauplius, Oithona attenuata, Acrocalanus gibber, Nauplius, Bivalvia veliger, Copepodite, Oithona simplex and so on.

优势种主要是中小型种类和底栖动物的幼虫，如强额孔雀哲水蚤、蔓足类无节幼虫、细长腹剑水蚤、驼背隆哲水蚤、无节幼虫、双壳类面盘幼虫、桡足幼体、简长腹剑水蚤等。

Dongguan Xingye Horologe Industry Fittings Factory specializes in high quality production of the special abnormity boards, hairpin, screw, and other kinds of 316, 314 import fittings of watchband and watchcase. The company was founded in 1998, with the unique geographical advantages of South China region at the national and international watch market ,plus years of painstaking efforts and management,the Xingye grows rapidly.

东莞兴业表业配件厂是一家专业生产高质量的特殊、异形花板、发夹、螺丝、巴管、子母通生身杆、冬菇头面钉等各类316、314进口表带表壳配件的企业，成立于1998年，凭借华南地区在全国乃至国际钟表市场上独特的区位优势，加上多年来励精图治、精益求精地苦心经营，兴业迅速地成长崛起。

Her mirror was a Puss-in-Boots, of which there are now only three, unchipped, known to fairy dealers; the washstand was Pie-crust and reversible, the chest of drawers an authentic Charming the Sixth, and the carpet and rugs the best period of Margery and Robin.

她的镜子是穿长筒靴的猫用的那种镜子，在仙子商贩的货架上，如今只剩下三面还没有打碎的（"穿长筒靴的猫"，出自《格林童话》，是一只帮助主人得到幸福的猫。--译注）。洗脸盆是馅饼壳式的，可以翻过来；抽屉柜是货真价实的迷人六世时代的，地毯是马杰里和罗宾极盛时代的产品。

Series of octahedral core-shell emulsion microcrystal with different distribution of iodide ions was prepared by double-jet method.

本文应用双注法制备了一系列碘分布不同的八面体核壳乳剂。

Through model test of new high- strength steel conical shell with ring frame ,and relevant analysis,it is shown in this paper that the failure of ring-framed conical shell can be traced to the neutral plane on longitudinal section where the structure strength is relatively weak.

通过新的高强度钢材环肋圆锥壳模型实验，及采用解析方法分析表明，环肋圆锥壳体破坏的原因是结构相对薄弱处纵剖面上的中面应力所致。并提出用"灰色系统"理论预测破坏载荷的计算方法，建议今后模型实验和现役潜艇的耐压船体寿命估算中可采用这种方

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。