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[求助]
求助:如何從專業(yè)角度理解這些句子(化學(xué)、環(huán)境領(lǐng)域)? 已有1人參與
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求助:句子倒是翻譯出來(lái)了,作者要表達(dá)的是什么意思呢? Particle surfaces. Where pollutant species are present in or associated with a condensed phase, it is sometimes necessary to establish whether the pollutant is part of the bulk system or present on its surface. Such a consideration is particularly meaningful since material present on the surface of an airborne particle, for example, comes into immediate contact with the external environment, whereas that which is distributed uniformly throughout the particle is effectively present at a much lower concentration and can exert a much lower chemical intensity at the particle surface. Since airborne particles can be inhaled, surface predominance can result in high localized concentrations of chemical species at the points of particle deposition in the lung®. 參考答案: 粒子表面。 在污染物質(zhì)存在的地方或者與濃縮相有關(guān)聯(lián)的地方,有時(shí)候需要確定污染物質(zhì)是大系統(tǒng)中的一部分還是僅僅在表面存在。這種考慮是有特別意義的,例如,因?yàn)榭諝庵蓄w粒表面存在的物質(zhì),直接和外部環(huán)境接觸,然而,均勻分布在整個(gè)顆粒上的物質(zhì)以較低的濃度存在,并且在顆粒的表面,它的化學(xué)強(qiáng)度也發(fā)揮的低一些。由于空氣中的顆粒可被吸入,表面控制可導(dǎo)致肺部顆粒沉積點(diǎn)化學(xué)物質(zhì)局部濃度的升高。 |
金蟲 (著名寫手)
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