元素毒性的大小,与其在周期表上(元素的性质)的位置无关,仅是生物对周围环境介质(environmental medium)长期适应(adaptation)的结果。具体表现为,海水中丰
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Results indicate that the distribution of photolytic products strongly depends on the environmental medium.
实验结果表明，光解产物的分布受环境和介质的强烈影响。
There are many factors which affect the wear of metals, such as load, slide velocity, environmental medium and temperature, metal properties and so on.
影响金属材料磨损的因素很多，如载荷、滑动速度、环境介质、温度、材料的性质等。
Generally applied to industry, environmental protection, ventilation pipes for medium-conditioning flow.
一般适用于工业、环保等管路作通风型调节介质流量之用。
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