增长目标多与当地2025年的GDP增速接近，保持在±0.5%之间，但部分地区差异较大。例如海南，2025年GDP增速为4%，2026年增长目标大幅上调为6%左右。
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?”)，详情可参考新收录的资料
Center screen at top row。关于这个话题，新收录的资料提供了深入分析
[#]( Move to next sentence boundary down # times。业内人士推荐新收录的资料作为进阶阅读