At last , the 3 - d finite element calculation within the midship area was carried out to analysis the transverse strength of the structural members , and the reference idea of structure optimization and lighting steel weight was submitted 最后，通过建立货舱段三维有限元模型，对构件的横向强度进行计算分析，并对结构优化和重量减轻提出指导性意见。
At last , we complete the sample machine . this sample machine has more simple structures , less components stabilized , less weight , smaller volume , higher precision of stabilization with the new optical image - stabilization system 在导引头的原理样机中，采用新的光学稳象系统后，系统结构精简，被稳元件数目减少，重量减轻，体积减小，稳定精度也有所提高。
Evaporative cooling can keep a low and uniform wall temperature . it can reduce the volume , the weight of the electrical equipments . meanwhile , it is safe and reliable even in short - time emergency overloads , so this cooling method really shows great promise on the application of large electrical equipment 采用此种冷却方式的大型变压器等电气设备换热效率高、能耗少；发热表面温度均匀；结构紧凑、制造所需材料减少、制造成本下降；寿命延长；重量减轻、体积减小；安全可靠。
At compared with ni - cd battery is better owing to high specific cap - acity , no memory effect , and no cadmium pollutio - n . while it is used on electric vehicle , the complete weight of the vehicle can be reduced , the perform - ance of application is good and servicing life is long . it is an ideal power source for electric vehile 镍氢电池与镍镉电池相比,既相似又超越，比能量高、无记忆效应、无镉公害,应用于电动车上时,使整车重量减轻、使用特性优良、寿命长，是理想的电动车电源。
