层片

ObjectiveTo study the ideal ablation depth for harvesting sheets of photoreceptor cells from retina by using the excimer laser with PTK (phototherapeutic keratectomy,PTK) mode.

目的探讨PTK 切削方式下，准分子激光切削视网膜制备理想感光细胞片层所需的最佳切削深度。

The Devonian is the source bed of gold, and phyllite, slate, schist and siltstone are important source rocks.

金在地层中的分布受岩性和沉积环境的控制，泥盆系是本区金成矿的矿源层，其中千枚岩、板岩、片岩、粉砂岩是金矿的重要源岩。

The gold orebody exists in phyllite, the second member of Gaixian Formation, Liaohe Group, lowerProterozoic Erathem, mainly in the form of vein, layer and lens, controlled by NNEschistosity belt and low order, secondary structure fissure.

金矿体主要以脉状、似层状、透镜状产于下元古界辽河群盖县组二段的千枚岩中，受北北东向片理化带及低序次构造裂隙所控制。

The Dam area is located in Weixi city of YunNan province,whose climate is sub-thermal or the mountain plateau temperate monsoon,the regional water system developed,the exposed strata are mainly limestone、dolomite、schist and phyllite, the aquifer and the Impermeable layers are separated each other.

坝址区位于云南身维西县境内，属亚热-温带季风高原山地天气，区内水系发达，出露的地层主要为泥盆系的灰岩、白云岩及片岩、千枚岩，呈含水层与隔水层互层状构造。

In cells with active secretion, enzyme reaction product was present in large quantities on the plasma membrane, vacuo le membrane, plasmodesma and in the endoplasmic reticulum, plastid lamellae,and only in small quantities in the mitochondria and small vesicles.

分泌活动旺盛的细胞中，质膜、内质网、质体的内部片层、胞间连丝以及多数大液泡的膜上面都有大量ATP 酶活性反应产物，线粒体和小泡上只有少量酶活性反应产物。

In cells with active secretion, enzyme reaction product was present in large quantities on the plasma membrane, vacuole membrane, plasmodesma and in the endoplasmic reticulum, plastid lamellae,and only in small quantities in the mitochondria and small vesicles.

分泌活动旺盛的细胞中，质膜、内质网、质体的内部片层、胞间连丝以及多数大液泡的膜上面都有大量ATP 酶活性反应产物，线粒体和小泡上只有少量酶活性反应产物。

Talc has a platy structure with hydrophobic surfaces. There is weak cohesion between the crystal lattices within talc particles; hence it possesses the advantages of a very low frictional coefficient, softness, and low abrasiveness.

滑石粉为片状结构，具有表面疏水性、在滑石粉颗粒中，晶格层间的内聚力较低、具非常低的摩擦系数、柔软性、低磨擦性等优点。

It was found that the section was brittle. The scales of the pangolin were composed of the very thin prismy construction units and the folded units. The scales of the pangolin included such trace elements as S,Si,Fe,Al and Ca, besides the element of C,H,O and N. There were small amount of P element in the internal layer of the pangolin's scale.

结果表明冲击断口为脆性断口；穿山甲鳞片是由极细的棱柱结构单元和叠片结构单元混合形成的；穿山甲鳞片除含有大量的碳、氢、氧及氮元素外，硫、硅、铁、铝、钙5种元素的含量也相对较高，鳞片内层中含有少量的磷元素。

Results showed that the paint can achieve good adhesion, better heat resistance and excellent protectiveness for magnesium alloy.

用扫描电子显微镜等分析手段研究了涂层的片状层叠组织结构，并探讨了涂层的成膜机理与防护作用。

Fatty tissue,internal corotid artery,internal jugular vein,styloid process and medical pterygoid muscle were important anatomical marks for CT diagnosis.

选取其中 6 0例(男 38例、女 2 2例)年龄不等(1 5～ 6 7岁)扫描对称的正常CT片作为研究对象，于OML下 2 0mm的咽隐窝层面上，观察咽旁间隙及咽旁结构的解剖学关

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。