This is the national tea varieties Tieguanyin's hometown, and environmental advantages of climate, and without any pollution, is the natural quality of green food base.
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It is also different from any other smoking-related study because it strictly tracks the effects of smoking without "interference" from other harmful causes such as poor diet and pollution.
这项研究与其它关于吸烟的研究不同之处还在于其严密追踪吸烟所造成的影响，而将其它诸如不良饮食习惯和污染等有害因素所造成的“干扰”排除在外。
The smelting reduction process saves energy and lessens pollution through using of ore fines without any pretreatment and agglomeration.
由于使用无需任何预处理和造块的矿粉，熔融还原法既可节能、又能减少污染。
The catalyst could be used for many times without any treatment and no pollution to environment. Comparing with the normal catalysts, the nanosolid superacid catalyst had obvious advantages.
该催化剂不经处理，可循环使用多次，且不污染环境，相对于一些常见催化剂具有明显的优点。
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