Stt is a form of contract between government ( as the landlord ) and the tenant . the terms of the stts , including its level of rental and backdating provision , are negotiated between the landlord and the tenant taking into account relevant factors and the particular circumstances of the case 短期租约是政府（作为业主）与租客订立的一种合约，短期租约的条款，包括租金水平及追溯力的条款，是在考虑到有关因素及这个案的特殊情况后由业主与租客商定。
2 . giving out entity - relation drawing ( erd ) and class illustration , designing data structure , we study many sub - algorithms in course of solving problem , put forward a random arrangement algorithm having local heuristic backdating ability to find feasible solution quickly and easily . 3 给出了排课问题的erd和类图，设计了排课系统的数据结构，并以此对课表安排过程的各个子算法进行了研究，提出了一个具有局部回溯和启发能力的、易于快速生成可行方案的随机安排算法。
Established the model of product quality - bom facing full - life cycle ? ? iqbom , designed the storage structure of iqbom and the data structure of its node - information . according to analyzing the character and the relation of product - bom as well as dbom and pbom , brought forward the arithmetic of iqbom integration and the mathematic functions and arithmetic of integration , distilling and backdating about product quality - information 建立了面向全寿命周期过程的产品集成质量bom的模型iqbom ,设计了iqbom的存储结构和它的节点的数据结构;在分析了设计bom和工艺bom的特点之后,建立了iqbom集成方法中所涉及算法的数学模型,并进行了必要的推理和证明。
