帮忙把这段文字翻成英文~~机器翻的一律不采纳！
\u6025~\u5e2e\u5fd9\u628a\u8fd9\u6bb5\u6587\u5b57\u7ffb\u6210\u82f1\u6587~~\u673a\u5668\u7ffb\u7684\u4e00\u5f8b\u4e0d\u91c7\u7eb3\uff01I'll start the passage by introducing different aspects of shopping. Firstly, i'll list some commonly seen shopping modes, give a brief introduction to each of them, mentioning their advantages and disadvantages, as well as the associated age group of different modes of shopping. The difference lies between online shopping and offline shopping. Regarding online shopping, there are B2C and C2C;individual purchase and purchase in group. As for offline shopping, there are convenient stores, big department store, television-purchasing and telephone-purchasing. And then we investigate from the comsumers' point of view to see why they do shopping. That is about consumer's physical desire to purchase as weel as their psycholigical one. In addition, their income is the main factor deciding what types of goods they buy, whether it's the high-class ones or the low-class ones. Here we emphasize on recommendation-purchasing and list three advantages of it. We'll also include an introduction to our company, and what we think about the prosperity of our company's development. Later on, a conclusion will be drawn and investigation on three aspects will be made, including how the revenues from group-purchasing reflect the success of a sales strategy, how group-purchasing can avoid running into a loss, and lastly how to promote healthy modes of shopping, which gives me a better understanding on shopping.
1) compared to Pt (111) surface, the H atoms are more easily from the Pd(111) surface into the sub surface, but also from H atoms from the Pd (111)sub surface and return to the surface of the barrier is high. The calculation result of NEB that pressure is higher in normal temperature and the absence of hydrogen, Pd (111) and Pt (111) surface may have a sub surface H atoms on Pd (111), but the more likely.
2) trans 1,3- butadiene and butene in 1- Pt (111) and Pd (111) surface adsorption energy increases coverage and reduces, in Pd (111) surfacereduces the tendency is more significant. Trans 1,3- butadiene and butenein 1- Pt (111) and Pd (111) surface adsorption and adsorption can besigma PI, trans 1,3- butadiene in two kinds of the metal surface of themost stable adsorption are 4 sigma adsorption model, the most stable adsorption in the two metal surfaces of butadiene were 2 sigma adsorption mode.
3) trans 1,3- butadiene and butene adsorption on Pt and Pd two kinds ofmetal surface geometric structure parameters show that the smaller thedistance and combined with the Pt surface, and the adsorption on Pt surface can be small. Causes of this abnormal phenomenon is of Pt metalatom distance is bigger than Pd, the adsorption of molecules on the Ptsurface deformation can be a greater. On the adsorption decompositionshows that interaction of adsorbed species and the metal Pt surface canmore.
4) sub surface H atoms increases the metal Pt and Pd surface work function, thus reducing the C4 olefin in the adsorption of two kinds ofmetal surface can.
5) sub surface H atoms significantly reduces the interaction of 1,3- and 1- butene and butadiene Pd surface energy and adsorption energy, leading to 1,3- butadiene partial hydrogenation product 1- butene easily from themetal Pd surface desorption and will not be further hydrogenated tobutane. PDOS analysis confirmed that even in the presence of subsurfaceH atoms in metals, metal atoms 1,3- butadiene and butene and 1- Pt surface still can form strong chemical bond, which makes the product of hydrogenation of 1- butene to desorbing from the Pt surface. So that thesub surface H atoms is prompted butadiene hydrogenation reaction with different selectivity in the Pt and Pd surfaces.
To begin with the passage,the various ways of shopping is my primary concern.Firstly,I'd like to list some common ways of shopping and illustrate their definition,advantages and disadvantages and their suitable groups in simple words.Also I will give an analysis between online shopping and offline shopping.Ways of online shopping are B2C,C2C, buying on someone's behalf and group buying.
Ways of offline shopping are convinient shops,big super markets TV shopping and telephone shopping.Then I will analyse why the comsumers would like to buy in a psychological perspective.That is because of the physical and psychological motivation of consumers.Moreover their buyings are determined by their incomes.
This passage mainly discuess group buying and will list its three advantages.Also I will add some introduction of my company.
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