伊朗新任最高领袖穆杰塔巴·哈梅内伊今天（3月12日）发表了他就任后首份声明。他在声明中表示，“已经研究了开辟其他战线的问题”，并称“在这些战线上敌人经验甚少，且将极为脆弱”。穆杰塔巴说，将根据战争的持续情况，并在权衡利益的基础上，启动这些战线。（CCTV国际时讯）
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They also needed an alternative to conventional X-rays. In a clinical linac, X-ray photons are produced by dumping high-energy electrons into a bremsstrahlung target, which is made of a material with a high atomic number, like tungsten or copper. The target slows the electrons, converting their kinetic energy into X-ray photons. It’s an inherently inefficient process that wastes most of the beam power as heat and makes it extremely difficult to reach the ultrahigh dose rates required for FLASH. High-energy electrons, by contrast, can be switched on and off within milliseconds. And because they have a charge and can be steered by magnets, electrons can be precisely guided to reach tumors deep within the body. (Researchers are also investigating protons and carbon ions; see the sidebar, “What’s the Best Particle for FLASH Therapy?”)