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安裝中文字典英文字典辭典工具!

安裝中文字典英文字典辭典工具!








  • CAS REGISTRY®
    CAS REGISTRY®, the CAS substance collection, is the premier source relied upon by scientists and regulators worldwide for accurate information on chemical substances
  • CAS Registry Number - Wikipedia
    CAS Registry Numbers (CAS RN) are simple and regular, convenient for database searches They offer a reliable, common and international link to every specific substance across the various nomenclatures and disciplines used by branches of science, industry, and regulatory bodies
  • CAS Number Search - NIST Chemistry WebBook
    “CAS registry” is a registered trademark of the American Chemical society
  • All you Need to Know About CAS Numbers | US - SDS Manager
    CAS numbers are unique numbers assigned to chemical substances by the Chemical Abstract Service to provide a consistent and reliable way of identifying the chemical substances
  • CAS, a division of the American Chemical Society - YouTube
    CAS is a global leader in scientific information solutions, empowering researchers, patent professionals, and business leaders to accelerate innovation
  • Empowering Innovation Scientific Discoveries | CAS
    CAS provides solutions and services that help empower scientific discoveries Learn how CAS can facilitate your research and drive innovation
  • CAS Common Chemistry
    Quickly confirm chemical names, CAS Registry Numbers®, structures or basic physical properties by searching compounds of general interest or leveraging an API connection
  • About CAS
    CAS builds the world’s largest collection of human-curated scientific knowledge covering over 150 years of published science Our tools are designed to address the challenges and complexities unique to scientific and patent data so that you can find the answers you need efficiently


















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