小虫 发表于 2025-3-25 06:44:33
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Introduction to Atomic Clocks,, and hydrogen clocks. Chip-scale atomic clocks are typically based on rubidium but far less precise, because they are designed for minimal size, weight, and power (SWaP). Also described are stored-ion clocks, which may be the frequency standard of choice for deep space, and atomic fountains, whichLINES 发表于 2025-3-25 12:01:40
http://reply.papertrans.cn/64/6363/636272/636272_23.pngsepticemia 发表于 2025-3-25 17:18:08
Extending the Schema.org Vocabulary for More Expressive Accommodation Annotationsct and easy to use, yet powerful and expressive, to describe “things” on the Web and to make them machine read- and understandable. For the tourism sector however, the vocabulary provided in the versions up to 3.0 was too shallow to make an expressive structured description of, for example, a hotel.habitat 发表于 2025-3-25 23:29:13
A Comprehensive Study on Train Operation Dynamics and Passenger Comfort Optimization,ystems offer substantial benefits, including high capacity and speed. With the elevation in living standards, the focus has transitioned from mere transport capacity to the safety and comfort of train travel. This research utilizes a dynamic model of train operation to analyze the forces involved inliposuction 发表于 2025-3-26 01:44:17
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Dietmar Gross,Werner Hauger,Peter Wriggershe pre-built corpus of Vietnamese Enterprise Law articles. We also evaluated the precision of classifying ontology concepts and got 86.4 % in result on testing sample set of Vietnamese legal ontology. The goal is that a search engine is proposed with indexed logical and semantic properties based on