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В Финляндии предупредили об опасном шаге ЕС против России09:28
Виктория Кондратьева (Редактор отдела «Мир»)。新收录的资料对此有专业解读
It's a puzzling, and unusual, mix.。关于这个话题，PDF资料提供了深入分析
Bits [17:14]: Four control flags -- set the descriptor's Accessed bit, mark validation passed, request a limit check, or signal a stack operation.。新收录的资料是该领域的重要参考
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?”)