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In this paper, the effect of imperfections on stability of the sheet—space latlice shell and the single layer lattice shell is investigated on theory and experiment.

本文针对板片空间结构体系的稳定和缺陷对其稳定的影响进行了理论分析和试验研究。

Mother shell, leaching beans, beans without flowering, they will catch the cook shell melon mother

17日,母亲壳牌,浸出屙尿豆,豆不开花,他们将赶上库克壳瓜子母亲

The core-shell microstructure through in-situ polymerization with calcium sulphate as core and with methyl methacrylate as shell was prepared.

采用界面原位聚合方法,制备以硫酸钙(CaSO4)粒子为核,甲基丙烯酸甲酯为壳的核壳结构。

In view of the feature of filter shell body and the formability of HPb59-1 brass,the warm forging process was adopted to manufacture the precision forgings of shell body for the microwave communication apparatus.

针对滤波器外导体的结构特点和HPb59-1黄铜的成形特性,采用温锻精密成形加工方法对滤波器外导体的内孔型腔进行了近净成形加工。

Add-on enters certain volume the peanut shell smashing the caustic soda solution, withdraws the mignonette element using the microwave method from the peanut shell.

摘要以花生壳粉为原料,加入一定体积的氢氧化钠溶液,利用微波方法从花生壳中提取木犀草素。

Therefore, the molarity ratio of Au/Ag played an important role for the formation of core-shell structure. The dense core-shell structure was obtained after heat treatment.

其断面可辨识具有黑色之晶格以银为主,当莫尔浓度在1 : 4之下,呈现较为均匀之核-壳结构,此为较多的银与金之金属电位交换消耗,达到较为平均之厚度。

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

It is to say that the patch of RAFT agent on the hairy chains.PS particles with the shell of copolymer of styrene and vinylbenzyl chloride were prepared by similar seeded and starved addition processes. RAFT agent with carboxyl end-group attached on the shell surface of PS particles by group reaction. Adding NIPA and photo-initiator into the continuous phase of polymerization system, hairy PNIPA were obtained.

最后,以表面负载一层乙烯基苄氯的亚微米级单分散聚苯乙烯微球为基质,将水溶性RAFT试剂与聚苯乙烯微球表面的官能团反应以负载到其表面,再在连续相中直接引入NIPA和光引发剂,RAFT聚合得到PNIPA毛发。

Black Butterfly Bay, Noctiluca Lo; Black Pearl / Jewelry; agate, jade / shell, etc.; shell inlay silver jewelry / Pui

法国 ST.Angelina爱·莲娜,是法属波利尼亚大溪地Angelina公司与香港经销商在中国合作经营的直属机构:专营黑蝶贝、夜光螺、黑珍珠/珠宝首饰、贝雕/玉雕等多种工艺精品。

First mostly contraposing hull deck structure it goes along FEA analysis, discuss the different influence degree of calculational results between the different simplifications of the mathematical model, thereinto mostly analyse five different simplifications of the deck model; Second contraposing hold section and hull deck structure it goes along FEA analysis together, discuss the different influence degree of calculational results between the different elements style, gridding number and gridding density, thereinto mostly analyse the difference between adopting 8 node shell element and 4 node shell element, nondense gridding and thick gridding, and numerous gridding number and few gridding number, In the end mostly contraposing hold section structure it goes along FEA analysis, discuss the different influence degree of calculational results between the different boundary conditions, thereinto mostly analyse the difference between adopting CCS boundary conditions and LR boundary conditions.

首先主要针对船体甲板结构进行分析研究,讨论结构简化不同对有限元计算结果的影响程度,其中主要研究分析了五种不同甲板结构简化模型;紧接着针对舱段与甲板结构一起进行分析研究,讨论单元类型,网格数量与密度的不同对有限元计算结果的影响程度,其中主要研究分析了分别采用8节点板壳单元与4节点板壳单元的不同,以及分别采用疏的网格与密的网格,多的网格数量与少的网格数量的计算结果的差异。最后主要针对舱段模型进行分析研究,讨论不同的边界条件对有限元计算结果的影响程度,其中主要研究分析了分别采用CCS舱段边界条件与LR舱段边界条件进行有限元计算而带来的结果上的差异。本文第二部分为港工建筑物中的大直径薄壁圆筒结构的有限元比较分析。在研究大圆筒的有限元比较分析中,主要讨论用不同的网格密度与数量来划分网格引起的差异。其中用了网格密,数量多与网格疏,数量少两种模型进行大圆筒结构的有限元分析对比

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A backer of an Afghan law that critics say legalizes marital rape has rejected the international outcry as foreign meddling.

饱受批评的一项法律的拥护者说合法化的婚内暴力不会受国际舆论的干涉。

Years ago, a ancient Egyptian fleet went to the Land of punt for seeking a kind of flavor named "myrrh", and aromatic plants which has dense exotic style for the queen Hatshepsut.

3500年前的一个古埃及的舰队到&彭特之地&寻找一种叫没药的香料。

I didn't tell him anything except that I needed the money.

我什么都没告诉他,只是说我需要钱。