泵浦倒空是限制激光等离子体拍频加速器概念成为现实的严重问题。
The pump depletion is a severe problem which hinders the laser-plasma beat-wave accelerator concept from being practical.
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注入回旋加速器真空系统利用了原有油扩散泵。
The injector uses original oil diffusion pumps temporarily.
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