WASHINGTON, Feb. 6 (Xinhua) -- The White House has allowed the U.S.-Russia New Strategic Arms Reduction Treaty (New START) to formally expire on Thursday, ushering in a new era of nuclear uncertainty ...
BEIJING, Feb. 7 (Xinhua) -- China keeps its nuclear capabilities at the minimum level required by national security and has no intention of engaging in an arms race with any country. This long-standin ...
（编辑推荐）本综述系统探讨了抗反流黏膜切除术（ARMS）在难治性胃食管反流病（GERD）中的应用，对比传统抗反流手术（ARS）证实其具有更短住院时间、更快恢复及等效生活质量（QOL）的优势，为微创治疗提供新选择。 Abstract 胃食管反流病（GERD）作为全球高发 ...
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