有孔的

The technique using the laser photocoagulation on dry retinal tear appears to be safe and reliable, especially applied among the high-risk population with retinal detachment including the high myopia, the aphakia, ocular blunt trauma and the artificial-lens.

干性视网膜裂孔行眼底激光光凝术安全可靠、无不良反应，尤其在视网膜脱离高危人群包括高度近视眼、无晶状体眼和人工晶状体眼、钝挫伤以及另眼有视网膜脱离病史者，更应常规散瞳进行详细的眼底检查，早期发现干性裂孔，及时给予眼底激光光凝术，防患于未然。

Young bine submits square column form, rod by silver-colored gray scale, burgeon skin celadon, have the leather opening of a lot of slit, add gradually when burgeon thick, lignification degree is strengthened, cuticular by ash green turn into gray, leather aperture turns garden into drop record.

主枝和分枝。幼茎呈方柱形，小枝被银灰色鳞片，嫩枝表皮灰绿色，有许多纵裂的皮孔，当嫩枝逐渐增粗，木质化程度加强，表皮由灰绿变为灰色，皮孔便变成园点状。

My factory main product includes: Hole, Hand hole, response potpad, block glue, cold storage block glue, rubber stick, rubber board,froth block glue, each kind of different shape rubber product,characteristic: Acidproof bears the alkali thermostable wear-resistingsilica gel product, the fluorine rubber product

我厂的主要产品有：孔、手孔、反应罐垫、胶条、冷库胶条、胶棒、胶板、泡沫胶条、各种异形橡胶制品，特点：耐酸耐碱耐高温耐磨硅橡胶制品、氟橡胶制品

As far as the approach of studying history is concerned, the objects to the two Rinds of extreme tendencies of the comtism and the Materialism when controulted with historical materials and concepts.

主张黑格尔主义与孔德主义相结合的历史进化论，认为黑格尔主义所认识的历史进化为非周期的循环，而孔德主义为直线进化论，因历史发展既有直线又有曲折，所以只有两相结合，才能全面认识历史的发展进程。

On a diatonic, essentially you have three holes that really sound good.

在布鲁斯口琴上，有3个孔是最动听的，特别是第3孔。

A new cermet sinter with through micro-porous structure was developed by vacuum liquid phase sintering method, in which Al2O3-Ni-Cr-Mo-Si-Fe powder was used as the basic material, TiH2 and CaCO3 were used as the composite pore-forming materials and hominess grains was used as dispersal particles. The cermet sinter was then infiltrated with Ag-Cu-Pb-Sn at vacuum and formed a new high temperature self-lubricating material.

以TiH2和CaCO3为复合造孔剂，以硬质微细颗粒为惰性弥散质点，采用真空烧结法制备出具有贯通型微孔结构的Al2O3-Ni-Cr-Mo-Si-Fe系金属陶瓷烧结体，并在烧结体中浸渍Ag-Cu-Pb-Sn系浸渍型固体润滑剂制备出新型高温扩散自润滑材料。

The invention relates to a nut (10) comprising an outer body (16) with an axial passage (22), an inner body which can be movably placed in the passage along an axial direction and which is divided along said axial direction into at least two jaws (18, 20), each jaw bearing an inner thread segment (24) on its radial inner surface, first guiding means (26) located on the outer body, as well as second guiding means (30) located on the jaws and co-operating with the first guiding means so that the jaws are radially displaced towards the exterior when the outer body is displaced in the unscrewing direction relatively to the inner body et radially displaced towards the inside when the outer body is displaced in the screwing direction relatively to the inner body.

本发明涉及一种螺母(10)，它包括：一个带轴向通孔(22)的外体(16)；一个内体，位于通孔(22)中，可沿轴向移动，并且沿所述的轴向方向至少分成两个滑块(18、20)，它们各自在其径向的内表面上具有内螺纹部分(24)。在外体上有第一导向装置(26)，同样滑块上有第二导向装置(30)，第二导向装置与第一导向装置共同起作用，所以，当外体相对于内体沿旋松方向作相对滑移时，滑块径向地向外滑移，并且，如果外体相对于内体沿拧紧的方向滑移，则滑块径向地向内滑移。

In this paper mainly predictive expressions for porous materials are described.The thermal conductivities of rock wool and calcium silicate insulating materials havebeen calculated by these expressions,however,it has been found that there is somedeviation of calculated values from measured data for these insulating materialscontaining structural water.The effect of the structural water on thermal conductivityhas been studied by means of TG-DTA curves of rock wool and calcium silicateinsulating materials,and...

本文介绍了预测多孔材料导热系数的主要计算方程，通过岩棉保温材料和微孔硅酸钙保温材料导热系数的预测，指出这些方法在预测含有结构水的微孔硅酸钙保温材料导热系数时，与实测值会有较大的偏差，进而利用岩棉和微孔硅酸钙保温材料热重和差热曲线，研究了材料结构水对其导热系数的影响，提出了预测含有结构水的多孔材料导热系数的修正方法，其结果与实测值相当吻合。

Water and template were removed from intercrystalline pores at lower temperature, which had lower ideal selectivity and lower concentration.

对膜在不同的焙烧温度下，单组份气体N2、H2、n-C4H10、i-C4H10的渗透通量进行了测量，结果表明在焙烧过程中，膜内主要有两种不同的孔产生，低温下晶间孔内的水份和模板剂首先逸出，这些孔对气体的选择性不大，但它们所占比例也不大。

When secondary building units characteristic of zeolite Beta detected by FT-IR appeared in the reaction mixture in the absence of crystals of zeolite Beta, the pre-treatment was terminated. The aluminosilicate gel with seconding building units characteristic of zeolite Beta was led to ordered-channel hexagonal mesoporous molecular sieve by the interaction between liquid-crystal micelles formed by the self-assembly of surfactants and pre-treated alumiosilicate gel. Therefore, the mesopore wall of SBU mesoporous materials showed the structural character of zeolite Beta.

当反应混合物出现用FT-IR可以检测到的Beta沸石次级结构单元且又没有生成Beta沸石晶体时，即刻终止预处理过程；然后利用表面活性剂超分子自组装形成的液晶胶团与经过预处理的无机物种通过界面作用把含有Beta沸石次级结构单元的无机物种导向为有规整孔道结构的六角中孔分子筛，这种SBU中孔材料的孔壁因而具有Beta沸石的结构特征。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐