这些以延长欧洲对加沙加境进入埃及的拉法的海外安全帮助为条件。
All that was backed by an offer of renewed European help to oversee security at Rafah, Gaza's border crossing into Egypt.
依据基本物理定律，建立电站锅炉热力系统典型环节的动态数学模型并形成系统设备模块库，以欧拉法求解。
The dynamic mathematical model of typical parts of generating boiler is set up according to basic physical laws, the modular library of system equipment is produced by Euler method.
应力平衡法以主梁弯矩合理为目标，通过主梁上下缘应力平衡来求得拉索索力。
The stress balance method aims at the girders' reasonable moment, getting the cable forces by balancing the stress in girder's upper and lower margin.
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