中壳

It was suggested that the shell of sea urchin is storage of metal element.

同时发现棘壳中金属元素的浓度比海水中的高很多，如 Fe 的浓度为海水的 34 万倍，Mn 为 14.5 万倍，说明紫海胆对海水中金属元素有很强的富集作用。

To study the resistivity structure of crust and upper mantle beneath northern and central Tibet, furthermore, discuss thermal behavior of north and central Tibet lithosphere, superwide band magnetotelluric sounding profiles named line 500 and line 600 which belongs to INDEPTH were finished in 1998 and 1999. The line 500 is from Dêqên to Longwei Co, and the line 600 is from Nagqu to Golmud.

为了研究西藏中、北部壳、幔导电性结构，讨论高原中、北部岩石圈热状态，1998年和1999年在西藏中、北部完成了德庆—龙尾错（500线）和那曲—格尔木（600线）超宽频带大地电磁深探测剖面的研究。

Any of several freshwater bivalve mollusks of the genera Anodonta and Unio, found in the central United States, that burrow in the sand or mud of lakes and streams.

淡水蚌发现于美国中部的无齿贝属和珠蚌属几种淡水双壳软体动物的一种，在湖和河中的沙中或泥中挖洞

Hypogene high thermal or deep source epi-mesothermal condition and it is not only stressed the mantle source simply but also the crust-mantle;②in order to guid ore exploration better the artificial classification of uranium deposits should be broken and uranium ore-forming system strengthened;③much attention should be paid to searching the diabase-hosted rich uranium ore in strongly argillized cataclastic zone;④attention should be paid to the influence of basement of volcanic basin on the uranium ore formation that should be undstood both in feeling and theoretically through the ore propect process;⑤relation of red basin with uranium ore formation can be made clear from analyzing tectonics, paleo-climate and time and it is not only theoretically important but also helpful to uranium ore prediction;⑥crypto explosive pipe is an uranium ore, rich uranium ore host structure and it is the next goal for uranium ore exploration in east China.

摘要文章论述了华东火山岩型铀矿找矿值得重视的地质问题：①铀成矿既可形成于浅源浅成低温条件，也可形成于深源深成高温或深源浅成中低温条件，在强调深源时，不是简单地认为是幔源就可以了，还必须强调壳幔作用的地质过程；②打破人为的&类型&划分，加强&铀成矿系统&的研究，更好地指导找矿；③研究基性脉体与铀成矿问题应注意构造、岩石矿物成分、成因、蚀变与成矿3大问题，注意寻找泥岩化作用强烈的破碎辉绿岩脉中的富铀矿；④火山盆地基底对铀成矿的作用主要是提供铀源，将基底对铀成矿的影响从感性认识推向理性认识，有效地指导找矿；⑤红盆与铀成矿关系可以从构造、古气候及时间分析研究中得出结论，它不仅仅是一个理论问题，而且有助于铀成矿预测；⑥隐爆角砾岩筒是铀成矿、成富矿的重要储矿构造，是华东火山岩型铀矿找矿的新领域。

PAI-3 was expressed in the human skin and mainly located in the superficial,more differentiatied layers of the epidermis,and was incorporated into the cornified envelope of terminally differentiated keratiocytes.

1、PAI-3 在人皮肤表皮组织中表达，且主要位于分化程度较高的表皮KC 中，其存在终末分化KCs 角质壳中。

The early stage of the Yanshan movement generated an Early Jurassic downfaulted basin and a Middle Jurassic compressional-downwarped coalaccumulating basin.In the middle stage,the Mid-Late Jurassic witnessed the formation of a volcanic downfaulted basin bounded by NW and NE deep faults,intermediate-basic and acid volcanic eruption and hypabyssal and near-sur...

燕山运动早期形成早侏罗世断陷盆地和中侏罗世挤压坳陷型聚煤构造盆地；中期中晚侏罗世形成被NW、NE向深大断裂围限的火山断陷盆地，中基性—酸性火山喷发和浅成、超浅成中酸性岩浆侵入，晚侏罗世末形成了一系列NNE向褶皱和逆冲推覆构造带；晚期早白垩世再次形成断陷盆地和开阔平缓褶皱，义县组不整合在火山岩之上，晚白垩世处于挤压造山后的山体隆升阶段，左云组不整合在义县组之上，伴随有壳源型花岗岩侵入，NW、NE向断裂复活，形成地堑、地垒式断裂组合，导致山体隆升。

In this study, we refer to the NCBI database to design primers which are used for amplification of the gene fragment of hepatopancreatic parvovirus、infectious hypodermal and hematopoietic necrosis virus and taura syndrome virus.

本研究从NCBI database资料中，分别在肝胰小病毒(hepatopancreatic parvovirus， HPV)、传染性皮下及造血组织坏死病毒(infectious hypodermal and hematopoietic necrosis virus， IHHNV)和桃拉病毒(taura syndrome virus， TSV)等三种常见之虾病毒中，各选出一段壳蛋白基因，利用重组蛋白的方式，在大肠杆菌中大量表现。

Jin Shui HighSPEED Mill Power Producing System can make the differdnt molal structures mate rials powderfor 20 eyes to 80eyes in common temperaeure, These materials are differdnt kinds of soft hard PVC 、PP、PS; thosecan change its nature such as PP、TEP、 PS、 PA、 PC ,etc; non-plastic such as dee rhm, timber, leather and palm oil shells, etc,Especially suit for raw material of plastic to chang its naure, paints of mother colour tofill up , paints, tec .During the working process, firstly put the quantitative and well-distrib uted rawmaterialsun to the Moll Box by the Hopper, them put the powder out of the Moll box by Auto loader, finallysirfand retrieve the powder through sifting machine .If someofthe have not milled well , you can do itagain As a matter of fact, it will be as excellent as the mew plastic and can keep every normof the munchang eablein their function of chemistry and physicsafterusing about 30% of power mixed up with 70%raw mate rials of plastic. So the machines if helpful of plastic businessman to save money and good for protecting our environ mentathe same time

金穗JS 系列高精密磨粉生产系统能在常温下将各种的软硬：PVC、 PP 、PS 及改性PP 、PS 、PA 、PC 等不同分子结构的及非塑料类如（鹿角、木梢、皮革及棕油壳等）材料磨制成20目~80目粉末状，适合塑料原料改性，色母料填充涂料、塑纺织的涂料、地毯背面涂料、制药等加工行业，这些颗粒原料通过定量的加料器均匀地送进磨箱中，再由吸风机将磨好的粉末吸出磨箱经过筛选机筛选回收，如较粗的颗粒再次被送进磨箱中进行粉磨，这些材料经过我们特殊改良刀齿，创新突破来配合日新月异原材料组合使用，经塑料制品厂商实践证明在其产品原料中加入磨制粉体30%左右使其更好塑化且其制品的化学，物理性能保持全新料的各项指针不变，因此是塑料厂商降低成本且同时有利于保护环境的粉磨回收设备。

In Shui HighSPEED Mill Power Producing System can make the differdnt molal structures mate rials powderfor 20 eyes to 80eyes in common temperaeure, These materials are differdnt kinds of soft hard PVC 、PP、PS; thosecan change its nature such as PP、TEP、 PS、 PA、 PC ,etc; non-plastic such as dee rhm, timber, leather and palm oil shells, etc,Especially suit for raw material of plastic to chang its naure, paints of mother colour tofill up , paints, tec .During the working process, firstly put the quantitative and well-distrib uted rawmaterialsun to the Moll Box by the Hopper, them put the powder out of the Moll box by Auto loader, finallysirfand retrieve the powder through sifting machine .If someofthe have not milled well , you can do itagain As a matter of fact, it will be as excellent as the mew plastic and can keep every normof the munchang eablein their function of chemistry and physicsafterusing about 30% of power mixed up with 70%raw mate rials of plastic. So the machines if helpful of plastic businessman to save money and good for protecting our environ mentathe same time

S 系列高精密磨粉生产系统能在常温下将各种的软硬：PVC、 PP 、PS 及改性PP 、PS 、PA 、PC 等不同分子结构的及非塑料类如（鹿角、木梢、皮革及棕油壳等）材料磨制成20目~80目粉末状，适合塑料原料改性，色母料填充涂料、塑纺织的涂料、地毯背面涂料、制药等加工行业，这些颗粒原料通过定量的加料器均匀地送进磨箱中，再由吸风机将磨好的粉末吸出磨箱经过筛选机筛选回收，如较粗的颗粒再次被送进磨箱中进行粉磨，这些材料经过我们特殊改良刀齿，创新突破来配合日新月异原材料组合使用，经塑料制品厂商实践证明在其产品原料中加入磨制粉体30%左右使其更好塑化且其制品的化学，物理性能保持全新料的各项指针不变，因此是塑料厂商降低成本且同时有利于保护环境的粉磨回收设备。

Firstly, the high resolution pictures of dragonfly wings from sample tests were studied thoroughly, and the unique feature of the reticulate vein distribution and the variation of the vein sizes and the grid shapes in different zones were figured out;then several computational models based on a dragonfly wing were established by using ANSYS, and beam 189 and shell 93 elements were used respectively in modeling of the veins and the membrane so as to ensure the compatibility between the veins and the membrane at a deformed state;these models subject to uniform loading cases were analyzed respectively so as to explore the unique performances of the wing structure, furthermore, through eigenvalue spectrum analyses of these models, the special role of the pterostigma in eliminating or suppressing the wing quivering effect was also evaluated.

首先，对实验中获取的高清晰度的蜻蜓翅膀数码图片进行了细致地分析，找出了翅膀网状翅脉结构中翅脉的分布规律与尺寸变化、网格形状的差异及不同形状网格的分布等独特的结构特征；再利用ANSYS建立蜻蜒翅膀网状翅脉结构模型，采用三节点等参数梁元beam189模拟翅脉和八节点等参数曲壳单元shell93模拟翅膜，以满足翅脉和翅膜间的变形协调性要求；通过非线性数值分析，探索了蜻蜓翅膀网状翅脉结构在均布荷载作用下所具有的独特的结构性能；通过模态分析，揭示了翅膀前缘靠近翼尖附近的翅痣在翅膀消震减振中所发挥的作用。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷