takkygogoのプロフィール

英語が出来る方助けてください。(かなり困っています。) 今学生をしているのですが400ページほどある英語の専門書を読み始めたのですがこの部分の訳がどうしてもしっくりこないのですが分かる方いませんでしょうか？？ 英語が大変苦手なので自分の訳に自信がなく困っています。 先生が海外に勉強に行っているので聞けず大変困っています。もし分かる方がいらしたら宜しくお願いします。 1.6. Mobility of Adsorbed Molecules The translational movement of adsorbed molecules is governed by the amplitude of the oscillations of Li(z) across the surface and by the available thermal energy. If the variations in Li(z) are much smaller than the mean thermal, kT, the energy barriers between adsorption sites are small enough to be overcome easily at the operational temperature: the adsorbed molecules therefore retain two translational degrees of freedom and can be regarded as mobile. On the other hand, if the energy barriers are much larger than kT, the adsorbed molecules are said to be localized since they spend most of their time on particular surface sites. In the hypothetical case of a perfectly homogeneous surface, there is no variation of Li(z) in the xy plane - see Figure 1.4a. It is more realistic to picture a uniform surface, which gives rise to energy wells of the same depth. Now, the potential energy profiles corresponding to mobile and localized adsorption are shown respectively in Figures 1.4b and 1.4c. In the former case, there is a random distribution of adsorbed molecules across the surface; whereas in the latter case, the location of the adsorbed molecules is governed by the surface structure of the adsorbent. Localization does not prevent the adsorbed molecules from 'hopping' from one site to another (unlike the situation in immobile chemisorption), but it is not compatible with the state of a close-packed completed monolayer.