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Worldcrunch on MSN
19 小时
This Happened — September 20: NYC Construction Workers' Famous Lunch On A Crossbeam
On this day in 1932, the famous photo was taken that captured construction workers having lunch while sitting on a steel beam ...
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21 小时
德国蔡司FIB双束扫描电镜Crossbeam 350-华普通用
将场发射电子显微镜的成像与分析能力与聚焦离子束的加工能力结合。 无论是刻蚀,成像或做三维分析,Crossbeam将提高聚焦离子束的应用速率。通过新的能谱模块实现大部分的三维成分分析工作。 您可自主选择使用蔡司 Crossbeam 340的可变气压功能,或者使用 ...
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