Roller bearings
Loo turned to the SLAC National Accelerator Laboratory in Menlo Park, Calif., where physicist Sami Gamal-Eldin Tantawi was redefining how electromagnetic waves move through linear accelerators. Tantawi’s findings allowed scientists to precisely control how energy is delivered to particles—paving the way for compact, efficient, and finely tunable machines. It was exactly the kind of technology FLASH therapy would need to target tumors deep inside the body.
，这一点在新收录的资料中也有详细论述
also get a new cert for microsoft.com
Стало известно о расколе внутри руководства Ирана после смерти Хаменеи08:22
"Our current understanding is that the on-site team did not believe that the slur was audible on the broadcast, and the show remained on iPlayer unedited that evening."