“calcium hardness”的概念、定义、翻译、参考文献-科学参考

单词	calcium hardness
释义	calcium hardness [`kal·sē·ǝm ´härd·nǝs] ^CHEMISTRY Presence of calcium ions in water, from dissolved carbonates and bicarbonates; treated in boiler water by introducing sodium phosphate.
随便看	automatic sequences automatic short-circuiter automatic shutdown automatic shut-off automatic slips automatic spider automatic stability automatic stabilization equipment automatic stoker automatic stop automatic switchboard automatic switching system automatic tank battery automatic tape punch automatic telegraph transmission automatic test equipment automatic threshold closer automatic threshold variation automatic time switch automatic tint control automatic titrator automatic toll ticketing automatic tracking automatic track shift automatic transfer equipment

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