查询词典 helmet shell

The efficiency of shell and tube heat exchanger is a core to design of a shell and tube heat exchanger .

管壳式换热器是广泛应用于各个领域的工业设备，在国民经济中具有非常重要的作用，管壳式换热器的效率问题是设计工作的核心。

The optimization design of guide shell is very important for compact plate-shell heat exchanger s.

对于紧凑型板壳式换热器，导流结构的优化设计是至关重要的。

A fold or pair of folds of the body wall that lines the shell and secretes the substance that forms the shell in mollusks and brachiopods.

套膜软体动物或腕足动物体壁上的膜或套膜，它连接壳体并分泌形成壳的物质

According to the method, the effect functions of imperfections about buckling loads of the composite sheet—space lattice shell and she single layer lattice shell are obtained. These effect functions can be simply used to determine the nonlinear buckling loads of engineering structures with imperfections.

并运用该方法，分别计算编制了板片空间结构和普通单层网壳的缺陷对临界荷载的影响函数图表，根据图表中均值和方差函数以及缺陷敏感性指标，在设计该类结构时可以较简便地确定缺陷对临界荷载的影响。

The Beijing Olympic Games mascot figure is composed by five personifications baby images, the general designation "the lucky baby", is called "the shell shell","to be clear" separately,"happy happy","welcomes" and "Nini".

北京奥运会吉祥物由五个拟人化的娃娃形象组成，统称&福娃&，分别叫&贝贝&、&晶晶&、&欢欢&、&迎迎&和&妮妮&。

The article introduces structure and design characteristics of Water Chamber Shell and expansion joint for 300MW and 600MW High Pressure Heater,and the way of drawing for the three-dimensional bottom shell of water chamber.

某公司设计制造的300MW、600MW机组高压加热器的水室包壳及膨胀节的结构、设计特点，及水室下部包壳的三维画法。

Shanghai Automotive Industry Sales Corporation, a subsidiary of SAGC, has a 50 per cent share of the joint venture, and Shell China Holdings B.V. and Shell Limited hold a 40 per cent share and 10 per cent share respectively.

上海汽车工业销售总公司（以下简称&上汽销售总公司&）作为上汽集团股份的子公司，持有合资公司50%的股份，壳牌中国控股私有有限公司和壳牌有限公司分别持有40%和10%的股份。

But they could only trace back to as early as 4000 years ago, but black-shell jade of pan-Hongshan culture in Liaohe River basin should be older (the carbon 14 test conducted by Seoul National University in Korea shows that black-shell jade should has a history of 5000 odd years).

论时间他们最早也只有4000年，而出自中国辽河流域的泛红山文化黑皮玉雕其年代应该更早一些（韩国首尔大学通过对黑皮玉雕的皮壳作碳14（C14）测试年代在5000年以上）。

Ballarat was established in the predecessor of the Standard Oil in 1860 Trust Company, early ROTHSCHILDS its merger with Royal Dutch Shell, as well as the establishment of the Indian ASIATIC oil companies, oil companies and then BURMAH cooperation with India to set up BURMAH-SHELL oil reserves and distribution company.

巴拉特的前身是成立于1860年的标准石油信托公司，早期它与英荷壳牌以及ROTHSCHILDS合并成立了印度 ASIATIC石油公司，随后又与BURMAH石油公司合作成立了印度BURMAH-SHELL石油储备和分销公司。

He designed and fabricated the first research nose shell to replace of the V-2 warhead and began placing cameras in the nose shell.

他设计和制作了第一个研究窗壳来代替V-2的弹头，并开始在窗壳上安装照像机。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。