This model is composed of error control unit, authorization unit, trust management and central control unit, and so on.
该模型主要包括以下几个部分：中央控制模块，信任管理模块，授权管理模块，错误控制模块等。
Without authorization, no production unit shall be allowed to change the production plan of psychotropic drugs.
精神药品的生产单位未经批准，不得擅自改变生产计划。
To do that the agent must obtain beforehand a certificate from the unit that delegates the authority and sign the contract in the unit's name and within the limits of authorization.
代理人必须事前取得责任代理的授权，在授权范围内以责任代理的名义签署合同。
The original designing unit shall be responsible for revision of the project design; the construction enterprise may not revise the design without authorization.
工程设计的修改由原设计单位负责，建筑施工企业不得擅自修改工程设计。
Without authorization no department or unit may work out projects for administrative charges and heighten charging standards.
任何部门和单位不得擅自设立收费项目和提高收费标准。
No unit or individual may damage or change without authorization protection signs for capital farmland protection zones.
不论什么单位和个人不得粉碎或者私自转变基本耕种田保护区的保护标志。
Article 43 No unit may set the price of electricity beyond its authority. No power supply enterprise may change the price of electricity without authorization.
第四十三条任何单位不得超越电价管理权限制定电价。供电企业不得擅自变更电价。
Article 6 Raw materials of psychotropic drugs and psychotropic drugs shall be allotted by the State according to plan. No production unit shall be allowed to sell them without authorization.
第六条精神药品的原料和制剂，按国家计划调拨，生产单位不得自行销售。
Article 6 Raw materials of psychotropic drugs and psychotropic drugs shall be allotted by the State according to plan. No production unit shall be allowed to sell them without authorization.
第六条精神药品的原料和制剂，按国家计划调拨，生产单位不得自行销售。
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