一小段文獻求翻譯
The measured distance between the two nearest atom rows is 2.22A ̊, i.e., close to the (111) interplanar distance of Pd (2.25 A ̊ ). Rows of Pd atom can be observed on the surfaces of most Co@Pd particles, denoting the uniformity of the Pd shell. The Co@Pd nanoparticles consist of 34 mol% Pd and 66 mol% Co, determined by ICP-AES measure- ments, that is consistent with the expected Pd/Co molar ratio (33/67). On the basis of the particle’s size, composi- tion, and lattice parameters, and assuming that the parti- cles are spherical, the estimated thickness of the Pd shell was 0.54 nm, i.e., about 2.4 atomic layers.
主要是我想知道是怎么知道Pd殼有多厚的，求大神們賜教，謝謝了
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0.54納米 約相當于2.4倍原子層
這個我看懂了，我不太明白前面是怎么得出來的這個結果？？？
On the basis of the particle’s size, composi- tion, and lattice parameters,應該是靠這一系列的數據計算的吧，
喟В諳碌囊壞閿藜?br /> On the basis of the particle's size [這里指Co@Pd這個核殼結構的顆粒大小(你的這個段落中沒有提及，但是前文應該有)], composition [既是Pd/Co=34/66這個顆粒內的原子成分], and lattice parameters [2.22A這個提及的兩排原子間的最近距離。這個距離被認為十分接近純Pd晶體內Pd原子內最緊排列方向(111)上的間距，因此被暗示為核殼結構里Pd原子間的間距], and assuming that the particles are spherical [假設顆粒是球形], [這里開始你已經懂了] the estimated thickness of the Pd shell was 0.54 nm, i.e., about 2.4 atomic layers，