Based on the actuating mechanism of sma , two new concepts which are called process - uncontrollability and quasi process - controllability , and a design idea which is called element - interconnection used to achieve quasi process - controllability of sma microactuators , are presented 针对sma的驱动机理，本文概括了sma的驱动过程不易控特性，并提出单元互联结构这一实现sma微执行器驱动过程准可控的设计概念。
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The third chapter , based on surveys of risk situation of china ' s commercial banking , discusses the relation between system transition and bank risks , pointing out the main features of commercial banking risks in china : risk concentration and the disproportionate risk - profit relation , the covert cumulativeness and partial outbreak of risks , and risks " institutional and uncontrollability properties 第三章在对中国商业银行风险的现状进行考察的基础上，论述了体制转轨与银行风险之间的关系，指出了我国商业银行风险的特征：风险的集中性与“风险? ?收益”的非对称性、风险的隐蔽累积性与局部爆发性、风险的体制性与失控性等。
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To ensure the security of gi inspection , no approving method has been developed by far to drive the capsule endoscope but utilizing the natural peristalsis of gi tract . the uncontrollability of the capsule endoscope brings on some limitations in its functional extension in inspection , medication and surgery , such as temperature and ph measuring , medicament spraying , sampling , on - line sample analyzing , laser incising and rf cauterizing 胶囊内窥镜目前还没有实用的主动驱动方法,只能利用消化道自然蠕动作为胶囊内窥镜前进的动力。由于胶囊内窥镜不可控,限制了它的功能扩展,比如压缩空气喷药、吸取组织样品、在线样品分析、激光切割、射频烧灼等。完善的胶囊内窥镜系统需要在现有基础上加入安全有效的驱动控制,可调整姿态、行进及定位,从而扩大胶囊内镜检查的适应症、安全性与多功能性。
