In the optical fiber transmitting system , attenuation of fiber affects transmitting efficiency directly , the lower attenuation is very important because it affects the sensitivity frequently . the choice of join form and fixation method is also important for it will make large wastage . so we must pay attention to the join and fixation form when designing sensors 从分析中得出，在光纤传输系统中，光纤的衰减直接影响光纤的传输效率，低衰减特性非常重要，因为它常常会影响测量灵敏度；光纤与光探测器之间的连接形式和固定方法如果选择不好也会造成较大损耗，为此在设计传感器的同时，特别注意了与光纤的连接和固定方式。
In this paper , for the bonding between the sling screw - thread - based and composite hull based on the underwater weapon composite , the bonding structure design , process design and leakproof technology between the load - bearing metal parts and composite hull are studied . with the further investigation on tensile test of the sling screw - thread - based the common technology of bonding between load - bearing metal parts and composite hull is obtained , which establishes the experiment and theory base for the technology of underwater and deepwater weapon in china 本文以水下兵器为背景，以某型号雷体吊耳螺纹座与复合材料壳体的胶接为研究对象，着重进行了金属承力件与复合材料壳体的胶接结构设计、工艺设计、胶接防渗技术的研究，并进行吊耳螺纹座拉力试验研究，最终获取了水下兵器用金属承力件与复合材料壳体连接形式的共性技术。
This paper applies nonlinear finite element program bsnfem to analyze the behaviors of eccentrically braced steel frames under cyclic load . the study that comprehensive and systematic analyze the factor of links length , thickness of links flange , distance of links rib , thickness of links rib and angle of brace to be changed affect energy - dissipation capacity of d shape and k shape eccentrically braced steel frames have been some studied before . this paper fills the black in the filed factor of high - span ratio , brace stiffness and brace - to - beam connections to be changed affect energy - dissipation capacity of d shape and k shape eccentrically braced steel trames and any factor to be changed affect energy - dissipation capacity of y shape eccentrically braced steel frames 对耗能梁段的长度、耗能梁段腹板的厚度、耗能梁段翼缘的厚度、耗能梁段加劲肋的间距、耗能梁段加劲肋的厚度、支撑的夹角等因素的改变对d形、 k形偏心支撑钢框架耗能的影响，前人已有一些研究，本文对这些因素的影响进行了全面系统的分析，完善了理论分析的不足；而结构高跨比、支撑刚度、支撑与梁的连接形式等因素对d形、 k形偏心支撑钢框架破坏机理的研究以及各种因素对y形偏心支撑钢框架破坏机理的影响，则很少有人涉及，本文对此也进行了深入系统的分析，填补了这一研究空白。
The present article arms at summariging the problemes of relativety large stress and deformation caused by the temperature variation , difficulties of manufacturing and maintaining , and the new demands of cabin design from the new method for life saving , etc , and then analysing the advantages and disadvantages for various joints from four fields of the strees , manufature , maintainous and mew design demand 本文针对飞机活动座舱盖使用中因温度变化引起较大应力和变形、生产和维修困难、新的救生方式对舱盖设计提出新的要求等问题，从应力、生产、维护和新设计要求四个方面分析比较了各连接形式的优劣。
Then a computer modeling using finite element program with material , geometry and state triple - nonlinear taken into account is carried out . the results were analyzed , and various failure patterns and m - curves were derived . according to the results , appropriate design suggestions are given out for designers 然后，本文在考虑材料、几何和状态三重非线性的基础上，对该连接形式进行了计算机模拟，其主要内容为对所有设计的有限元模拟试件进行计算，分析其结果，找出这种连接的各种破坏形式及m -曲线。
The catena products design for stsrting closing controling of diversified strong corrosive medium , configuration form is float through form , connect form is flange , valves crust adoptcarbon - steel pad fluorine plastic inside , valve - ball is made of metal embed parts wrap fluorine plastic outside with integrative of valve - staff , have trait of commendably rotproof and airproof closing and starting neatly fleetly , and that exterior handsome intensity high durable 本系列产品是为各种强腐蚀性介质的启闭控制而设计，结构形式为浮动直通式，连接形式为法兰，阀外壳采用碳钢内衬氟塑料，阀球为与阀杆一体式金属嵌件外包氟塑料工艺制造，具有耐腐密封性好启闭灵活快速的特点且外型美观强度高经久耐用。
The catena products design for stsrting closing controling of diversified strong corrosive medium , configuration form is float through form , connect form is flange , the passing parts of valve - body lumen and valve - cover valve - staff etc . are all metal pad fluorine plastic inside , rotproof excellently . the product have son - catena j41f - 16 pad fluorine end - valve and j44f - 16 angle form pad fluorine end - valve choosing to use 本系列产品是为各种强腐蚀性介质的启闭控制而设计，结构形式为直通式和角式，连接形式为法兰，阀体内腔及阀盖阀杆等过流部件均为金属内衬氟塑料，耐腐蚀性能优异。
Compared with other connection process , it has many advantages , such as simple technics , reliable connection strength , low cost and adapting to connect various kinds of materials etc . by means of increasing the capacitance and decreasing the voltage , we control the discharging energy and apply the low - voltage electromagnetic riveting ( lver ) process to rivets made of some widely used materials 同其他连接形式相比，其工艺过程简单、连接强度稳定可靠、成本低并能适应于各种材料之间的连接。本文通过增加系统电容量和降低电压的手段来控制放电能量，将低电压电磁成形方法用于常用材料铆钉的铆接。
