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两名业内人士透露，近几个月美国芯片制造商在向中国申请新的钪出口许可证时频频遇到延迟，一些企业已向华盛顿寻求帮助。，详情可参考爱思助手下载最新版本
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A new study reveals that the adult human brain continues to produce new neurons throughout life, a process that is highly active in older individuals with exceptional memories but severely limited in those with Alzheimer’s disease.
· 孙亮 · 来源：user资讯