The first step relaxes the minimal demand of biodiesel and gasohol by 5% of the total demand. Then, the growing area determined in the first step is set as the upper limit in the second step to find the solution with the best benefit. Eight possible scenarios for various bioethanol and biodiesel demands were analyzed.

第一階段先放寬生質(zhì)柴油及生質(zhì)酒精總需求量為最小需求量再加5%欲色天天网综合久久88，求取能滿足總需求量的最小栽種面積在线亚洲欧美va天堂在线；第二階段則以第一階段所求出的面積為限美女操逼视频污网站，求取最大效益解。

First of all,the procedure and methods of the implementation of the STEP neutral file are introduced,and the EXPRESS representation for the geometric and non geometric entities of a 2D engineering drawing are also discussed.

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Centrifugal energy saving analysis and measures: 1 improve the efficiency of centrifugal pumps a first step, in the selection of comparison, when many suppliers Selection program, in considering the cost-effective choice as far as possible under the premise of efficient programs; the second step , accredited professionals must Mill producers, affecting the pump efficiency of the key components such as impellers, pump body, pump cover, diversion devices, such as the manufacture of quality producers, especially for the airfoil impeller , outlet angle, leaves the sub-degrees, the shape of flow channel, to control the quality of finish, etc., so that products are delivered in the current production under the conditions of highly efficient products; the third step, the scene in the production of installation and debugging process, pump to ensure a solid foundation, with the driving machine for good, before and after valve flexible piping layout design is reasonable, on-site control is feasible and safe, the complete and accurate monitoring instrumentation to ensure that pump operation can carry out real-time monitoring; fourth step , are at long-term operation of water pumps necessary to pay attention to the equipment inspection and found anomalies reflect real-time reporting, in the normal minor repairs, overhaul cycle, to deal with the replacement of wearing parts inspection to ensure the pump's long-term safe and efficient operation.

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To step in is to become involved. For example,"The coach wanted to let the team work out their own problems on the court, but after getting beat badly in the first quarter, he decided to step in," or "I let them argue, but had to step in when they started punching each other."

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The first step enumeration practicable path according to the route information; the second step using genetic algorithm, paths in the first step are generated as gene, all the paths of orders constitute chromosome. Mathematical model was established considering the weight, quantity and size restrictions.

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The results showed high class PbSt2 could be synthesized by this new saponifying process.Compared with metathetical process,the reaction time shortened,liquid-solid ratio and moisture content of filter cake decreased.Powder product could be prepared by one-step process,and particle product by two-step process.For the optimum processing conditions,the reaction temperature and time for one-step process were 65℃ and 10min,the amount of alkali added in the first step was 50%;reaction temperture and time were 65℃ and 10min for the two-step process.

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The first step was esterifying FFA to its methyl esters. The second step was transesterifying the triglycerides in the products of the first step to methyl esters and glycerol.

第一步為酸催化預(yù)酯化反應(yīng)，主要是將地溝油中的游離脂肪酸轉(zhuǎn)化為脂肪酸甲酯一级毛片免费网站视频中文；第二步為酸催化轉(zhuǎn)酯化反應(yīng)在线观看视频黄页，主要是進(jìn)一步將地溝油中的甘三酯轉(zhuǎn)化為甲酯和甘油。

When we step to the new world, we are like a child toddling, fall over for the first step. But it doesn't mean to failure as we made the first step after all.

我們邁入新世界時(shí)无码最新首页，像一個(gè)蹣跚學(xué)步的幼兒国产精品亚洲日韩欧美第一页，剛走第一步就摔倒了，但這不是失敗人人爽人人做，畢竟我們已經(jīng)邁出了這一步国产原创自拍。

For example, an objective polyester can be produced in a method of producing an ester comprising, a first step wherein a diol is reacted with an ester produced beforehand from a dibasic acid and a monofunctional alcohol, or an ester produced beforehand from a monofunctional alcohol and diol, a second step wherein unreacted ester is separated from the product produced in the first step to obtain another ester, and a third step wherein unreacted ester separated in the second step is recycled to the first step, 0.05-5 millimoles of the catalyst relative to one mole of acid being used in said first step.

例如，可以應(yīng)用制備酯的方法制備目的聚酯激情小说套图，包括一级α片屄，第一步，使二醇與產(chǎn)生的酯反應(yīng)偷拍美女插B，該酯由二元酸和單官能團(tuán)醇預(yù)先制得欧美91影院，或由單官能團(tuán)醇和二醇預(yù)先制得；第二步a片在线观看的，將未反應(yīng)的酯與第一步所制得的產(chǎn)物分離，得到另一種酯狼友在线精品视频网站；第三步黄片一级片免费看，將第二步中分離出的未反應(yīng)的酯循環(huán)回到第一步中，在第一步中相對(duì)于1摩爾酸來(lái)說(shuō)欧美三级黄色网站，應(yīng)用了0.05-5毫摩爾所述的催化劑欧美视频在线一区二区三区。