薄壁的

This paper studied the calculating method of the spiral-fluted tube's spinning force, which can provide basic theory for designing spinning shaping equipemnt, establishing spinning shaping technology and designing spinning tools.

摘 要：研究了薄壁圆管螺旋槽旋压成形时力的计算方法，可为设计旋压成形设备、编制旋压工艺、设计旋压工夹具提供理论依据。

Railway applications - Railway rolling stock cables having special fire performance - Thin wall - Part 2 : single core cables.

NF F63-306-2-2003 铁路设施。有专门防火性能的铁道车辆电缆。薄壁。

A procedure test method relative to thin-wall tube strength expansion was introduced in this paper.

介绍了一种薄壁管胀接的工艺试验方法。

According to the theory of stress analysis,the intensity design of the thin-skinned internal pressure cylinder is analyzed in this article.

运用应力分析理论进行了内压薄壁圆筒的强度设计。

Field experiment with different potassium levels was carried to study the effect of potassium on the microstructure and ultrastructure of storage root parenchyma cells,the respiratory rate and ATP content of storage root,the distribution of 14C photosynthates and the storage root yield in sweet potato Ipomoea batatas

选用徐薯 18号为材料，通过大田试验研究了供钾水平对甘薯块根薄壁细胞显微和超微结构、块根呼吸速率和ATP含量、14C同化物分配和产量等的影响。

It consists of dead hollow cells and VESSELS, which are the conducing elements.

包括主要运输分子——中空的死细胞，还有一些纤维和石细胞为辅助支持组织以及薄壁细胞。

Automatic Bulging Machine Tool Model PXC -700A can easily form hollow parts with curvilineal rotative shell, such as cylinder or trumpet. They are widely used in the industries of aviation, spaceflight, chemical, automobile, universal machinery, foods processing machinery and electric equipment for processing parts as wheel hubs, fans, cookers and high voltage switches.

PXC -700A 型自动旋压机床能方便成形圆筒形、喇叭形等曲母线形薄壁空心回转体零件，在航空航天、化工、汽车、通用机械、轻工食品、电气等行业的零部件加工得以广泛应用。

Description: The technology shall be applied in finishing of thin-wall cylinder sleeve, required to reduce the geometric tolerances, including roundness tolerance, cylindricity tolerance and coaxiality tolerance.

内容说明：该技术应用在薄壁缸套的精加工方面，要求降低圆度，圆柱度，同轴度等形位公差。

Result There was no significant difference to the number and length of parenchyma cell in the uppermost internode between Shuangdi Pei eS and Shuangdi S in meiosis and dikaryon pollen stages;there was significant difference to those in tikaryon pollen stage, and there was very significant difference to those in anthesis and the 7th day after anthesis,and on the 7th day after anthesis,the difference to the number and length of parenchyma cell in the uppermost internode between Shuangdi Pei eS and Shuangdi S was the greatest.

长穗颈双低培eS与双低S穗颈节间薄壁细胞数及细胞平均长度在减数分裂期和二核花粉期差异不明显，于三核花粉期差异达显著水平，始花当天和始花后第7天均达极显著水平，其中始花后第7天时两者的差异最大。

The seismic behavior of great size thin wall reinforced concrete pipe columns is discussed through model experimentations and finite element methods in this paper, after taking Air Cooled Condenser system structure of a main factory building of the large capacity power plant as experimentative prototype.

中文摘要：本文以某大型火电厂空冷凝汽器系统支架结构中的钢筋混凝土管柱为原型，通过模型试验和有限元分析，研究了大尺寸薄壁钢筋混凝土管柱抗震性能等问题。

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