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2026-03-27 15:53:44
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Albedo is an indicator of how much incident radiation, such as sunlight, is reflected by the Earth's surface or the surface of an object. It is typically expressed as a dimensionless value between 0 and 1, or as a percentage (%), where higher values indicate higher reflectivity and lower values indicate greater absorption of energy. For example, fresh snow has a very high albedo, reflecting most sunlight. In contrast, forests, oceans, and asphalt pavements have relatively low albedo, absorbing more energy. Albedo is a key physical quantity significantly involved in Earth's energy balance and climate system, and is utilized in many fields including climate science, environmental research, remote sensing, and urban climatology.
2026-03-27 07:42:00
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2026-03-25 07:32:00
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Web Snapshot Collection refers to the technical process of fully capturing, storing, and archiving web page content at a specific point in time using web crawlers or automated tools. Unlike conventional text or structured data collection, web snapshot collection focuses on preserving the original presentation state of a web page at a given moment, including HTML structure, Cascading Style Sheets (CSS), JavaScript scripts, images, videos, and other multimedia resources, as well as user interaction states and page layout information. This technology "freezes" web page content into static copies, enabling traceable records of web page historical states, providing foundational support for information preservation, evidence retention, content comparison, and archival research.
2026-03-24 07:23:00
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2026-03-23 07:05:00
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2026-03-20 06:55:00
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Chinese University MOOC (icourse163.org) is a large-scale online education platform led by the Chinese Ministry of Education and jointly operated by NetEase and Tsinghua University. Its goal is to make university-level lectures available on the internet, allowing anyone to take them for free or at low cost. The platform features participation from many universities across China, offering courses across a wide range of fields including engineering, computer science, economics, literature, and foreign languages. Through features such as video lectures, online assignments, discussion forums, and completion certificates, it broadly shares university education content with the general public and expands learning opportunities.
2026-03-19 06:50:00
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NetEase Cloud Classroom (study.163.com) is an online learning platform provided by NetEase, a Chinese internet company. It offers courses in a variety of fields—including IT/programming, design, business, language, and certification exam preparation—in video format, providing an environment where learners can acquire knowledge and skills at any time and place via the internet. Numerous courses produced by professional instructors, companies, and educational institutions are available, and through systematic course structures and practical exercises, it is widely used as an online education service that supports professional skill development and self-improvement.
2026-03-18 06:47:00
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Ximalaya FM (ximalaya.com) is a widely used online audio platform in China, an audio media service that distributes podcasts, audiobooks, radio programs, knowledge content, and more. Through smartphones or the web, users can listen to audio content across various genres including news, education, entertainment, business, history, literature, and more at any time. As an audio distribution platform, it provides mechanisms for individual creators and professional institutions to publish programs, forming an integrated ecosystem for audio content production, distribution, and monetization. Additionally, utilizing AI voice technology and recommendation algorithms, it presents content tailored to users' interests, delivering a continuous listening experience.
2026-03-17 02:42:00
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Dedao App (dedao.cn) is an online learning platform developed by the Chinese knowledge service company Luojisiwei (Logic Thinking) team. It provides knowledge content across a wide range of fields including business, technology, history, psychology, and self-improvement, primarily through formats such as audio lectures, e-books, specialized columns, and online courses. Centered around its smartphone application, it is widely used in China as a "knowledge subscription service" that enables learning during commutes and spare moments. Many renowned scholars, entrepreneurs, writers, and other experts participate as instructors, aiming to deliver systematic and practical knowledge in an accessible manner to general users.
2026-03-16 06:36:00
