In 1991, theoretical physicist John Sidles first proposed the idea of combining MRI with atomic force microscopy to image tiny biological structures.
1991年，理论物理学家约翰·赛德斯首次提出了将原子力显微技术与MRI相结合用以对微小生物结构成像的想法。
NIST physicist James Bergquist notes that the idea of using a constellation of satellites for navigation came up only after atomic clocks were developed.
NIST的物理学家JamesBergquist指出，原子钟出现后不久就有了利用卫星星座进行导航的思想。
NIST physicist James Bergquist notes that the idea of using a constellation of satellites for navigation came up only after atomic clocks were developed.
NIST的物理学家JamesBergquist指出，原子钟出现后不久就有了利用卫星星座进行导航的思想。
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