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1 Markets I: The Ecosystem and Exchange-Traded Markets市场在线 2 Markets II: Rates, FX and Credit市场在线 3 Markets III: Commodities, Energy and Crypto市场在线 4 Quantitative Methods方法在线 5 Derivatives and Volatility衍生品在线 6 Rates, Credit, XVA and Risk利率、信用与风险在线 7 Research Craft: Predictors, Backtests, Measurement, Portfolios研究在线 8 Strategies I: Equities and Futures策略在线 9 Strategies II: Volatility, Relative Value, Macro and the Bank Desks策略在线 10 Microstructure and Execution交易执行在线 11 Market Making and High-Frequency Trading做市在线 12 Machine Learning for Markets机器学习在线 13 Low-Latency Software技术在线 14 Networks, Hardware and Trading Infrastructure技术在线 15 Research, Data and Risk Platforms技术在线 16 The Desk and the Firm公司运营在线 17 The Industry: Firms, Roles and Careers职业发展在线 18 Interviews I: Maths, Probability and Speed职业发展在线 19 Interviews II: Markets, Trading Games and the Final Round职业发展在线 20 Interviews III: Code职业发展在线

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Earth and Space Sciences · 术语表

什么是 Activity diagram？

又称： activity diagram (mineral stability)

Definition 15.8 University Earth and Space Sciences — Year 3 · 第 15 章 — Water–Rock Interaction

An activity diagram (mineral stability) divides a plane of activity ratios of a water, such as $\log(a_{\ce{K+}}/a_{\ce{H+}})$ against $\log a_{\ce{H4SiO4}}$ , into the fields where each mineral of a chemical system is the stable one.

Stability fields in the system K2O–Al2O3–SiO2–H2O at 25\, C, with the saturation of quartz (dashed) and amorphous silica (dotted). Three invented waters: A, a dilute tropical stream; B, a stream on granite; C, a deep ground water in granite. — Stability fields in the system $\ce{K2O}$ – $\ce{Al2O3}$ – $\ce{SiO2}$ – $\ce{H2O}$ at $25\,{}^{\circ}\mathrm{C}$ , with the saturation of quartz (dashed) and amorphous silica (dotted). Three invented waters: A, a dilute tropical stream; B, a stream on granite; C, a deep ground water in granite.

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