查询词典 a sheet

The psammoma body mineralization in meningioma is a common type of mineralizationThe analysis of the mineral composition may provide some support information in finding the reason of happening and developing of the diseaseThis paper focuses on the concentric layered structure mineralization in meningiomas, using mineralogical methods, such as HRSEM, ESEM, EDAX, EPMA, HRTEM, XRD and FTIR to systematically investigate the mineral composition, structure and shape of the minerals in psammoma bodies in meningiomasWe have devised a method for preparing the silicon wafer sheet which was used for the ESEM insitu observations and analysisIn this study, we first got the ESEM and HRTEM images of the initial mineralization phase of meningiomasThese images showed that in the early stage of psammoma body mineralization in meningiomas, many mineralized balls composed of octocaphosphate were precipitated on the collagen fibersThese balls continued to grow and aggregate, and were gradually hydrolyzed to become the dahlliteThe continued development of mineralization resulted in the mineralized collagen fibersThe study revealed that the concentric layered structure of the psammoma bodies in meningiomas is formed by the spiral arrangement of the mineralized collagen fibers on which the mineralized grains precipitated.

砂粒体矿化是脑膜瘤中常见的矿化类型，对其形成机理和矿物成分的分析可能会对肿瘤发生、发展的研究提供辅助信息。该研究选取人脑膜瘤中的砂粒体矿化作为研究对象，采用偏光显微镜、环境扫描电镜及能谱、X射线衍射仪、高分辨透射电镜和电子探针对样品的形貌、结构和成分进行测试分析，并以此为依据探讨脑膜瘤中砂粒体的形成机理。研究结果表明矿化的初期为沉淀在胶原纤维上的矿化小球，成分为磷酸八钙；矿化小球不断生长聚集，并逐步水解为碳羟磷灰石晶体，矿化的不断发展致使胶原纤维也发生矿化。砂粒体的同心层状构造是由螺旋状排列的矿化胶原纤维及沉淀在其上的矿化颗粒组成的集合体，而不是多数研究中所述：砂粒体是以坏死细胞残骸为中心由内至外的同心层沉淀。

A large meltwater stream rushes across the surface of the Greenland Ice Sheet filling a supraglacial lake.

一个大融水流草席横跨格陵兰冰盖填补supraglacial湖面。

Carding produces a thin sheet of uniform thickness that is then condensed to form a thick, continuous, untwisted strand called sliver.

梳理产生了厚度统一的薄层，然后经过压缩，形成厚实、连续、不纠缠的线，称为银线。

Carding produces a thin sheet of uniform thickness that is then condense d to form a thick, continuous, untwisted strand called sliver.

梳理产生了厚度统一的薄层，然后经过压缩，形成厚实、连续、不纠缠的线，称为银线。

Carding produces a thin sheet of uniform thick ness that is then condensed to form a thick , continuous, untwisted strand called sliver.

梳理产生了厚度统一的薄层，然后经过压缩，形成厚实、连续、不纠缠的线，称为银线。

The β-CA of B.napus was located in chloroplast stroma and had the conservative motif Cys-X(subscript n-His-X2-Cys peculiar to β type carbonic anhydrases. In the secondary structure,α-helix, random coil,β-sheet, and β-turn were 39.88%, 39.27%, 16.31%, and 4.53%, respectively. The three-dimensional structure was constructed by homology modeling. The 3-D alignment of β-CA from B.napus and a monomer of β-CA octamer from pea showed that the 3-D structure of β-CA from B.napus could match well with the monomer. The alignment results Implied that β-CA from B.napus was a monomer of the β-CA octamer from B.napus.

预测结果显示，甘蓝型油菜β破酸酐酶是定位于叶绿体基质的蛋白质，具有β类碳酸酐酶所特有的保守性基序Cys-χ-His-χ2-Cys；SOPMA预测二级结构显示α螺旋(39.88%)、随机卷曲(39.27%)、β折叠(16.31%)和β转角(4.53%)；用同源建模法构建了三维结构图；通过VAST矢量比对工具将甘蓝型油菜β碳酸酐酶与模板进行三维结构比对，显示甘蓝型油菜β碳酸酐酶与碗豆β碳酸酐酶同型八聚体中的一个单体很好的匹配，推测甘蓝型油菜β碳酸酐酶全酶也是同型八聚体。

Because this comes courtesy of China Development Bank, a policy lender, there is less danger of absconding buyers blowing a hole in ZTE's balance sheet.

由于为中兴通讯授信的国家开发银行是一家政策性银行，买方逃债导致中兴通讯资产负债表产生漏洞的风险较小。

Gelatinized corn starch was prepared by a co-rotating twin-screw extruder,and through drying and comminuting process. Thermoplastic starch was prepared with the gelatinized corn starch powder as raw material and glycerol and Polyvinyl Alcohol as plasticizing agents. Thermoplastic starch sheet was prepared with extruding process. Degree of gelatinization was tested by a polarizing microscope. Mechanical properties of prepared thermal plastic starch sheets were studied in relating to type and amount of the plasticizing agents.

利用双螺杆挤出机对玉米淀粉进行糊化处理，经干燥、粉碎后制得预糊化淀粉，以其为原料，添加甘油，PVA为增塑剂制备热塑性淀粉，经模压制备片材后，通过偏光显微镜分析了淀粉的糊化情况，研究了甘油含量和PVA含量变化对材料性能的影响。

In a moment of skeptical reflection on the original material that he is endlessly manipulating﹐Wang Du crumples up the sheet of paper into a ball﹐like the kind we intend to toss in the wastepaper basket.

在一个对他不断地操纵的原材料进行怀疑的思考的片刻，王度在他的掌心里将纸张捣碎，把它变成一个圆球，就像人们扔进字纸篓里的纸团一样。

If a lender flogs a loan or security for less than the value at which it is booked on its balance-sheet

如果出借方以低于它资产负债表上的价格出售它拥有的贷款或债券

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。