廉价的

In this thesis, several novel reaction-controlled chiral phase-transfer catalysts were designed and synthesized from readily available materials, and were used in the asymmetric epoxidation of unfunctionalized olefins and chalcone.

本文以有机合成方法学为目标，从廉价的原料出发，合成出几个新的反应控制的手性相转移催化剂，并且检验了他们在催化烯烃的不对称环氧化中的催化效果。

Calf rennet, consisting of mainly chymosin with a small but variable proportion of pepsin, is a relatively expensive enzyme and various attempts have been made to find cheaper alternatives from microbial sources These have ultimately proved to be successful and microbial rennets are used for about 70% of US cheese and 33% of cheese production world-wide.

与其他凝乳酶一起组成了一个虽小然而却有很大比率的胃蛋白酶的幼牛凝乳酶相对来说比较昂贵，因此目前关于能否在微生物资源中寻找廉价的凝乳酶正在试验中。这一设想最终一定会成功并且从微生物中得到的凝乳酶将会用于生产美国市场中77%，全球市场33%的乳酪制品。

But also should see, our country basically is hold the market with cheap raw ore, lump raw ore exports a quantity to occupy the 95 ％ above that always speaks a volume, the 1／ that average price is price of farinaceous product export only 2, under Moroccan export price, the price that compares Euramerican country is lower.

但是也应该看到，我国主要是以廉价的原矿占据市场，块状原矿出口量占总出口量的95％以上，平均价格只是粉状产品出口价格的1／2，低于摩洛哥的出口价格，比欧美国家的价格更低。

However, the lack of a large number of and low cost laccases has become one of the most important obstacles to commercial application. And one of main solutions to this problem is heterologous expression of a laccase gene.

但是缺少大量廉价的酶源供应阻碍了漆酶商业化的应用，解决这个问题的一个主要方法就是通过漆酶的异源表达来获得大量的漆酶。

I like many kind of smells which others do not like ,such as a slight of mildewy odor, the smell of dust which bedewed with the rain, the savor of scallion or garlic, the sent of cheap perfume.

别人不喜欢的有许多气味我都喜欢，雾的轻微的霉气，雨打湿的灰尘，葱蒜，廉价的香水。

I like many odors which others may feel unpleasant about, like a slightly mildewy fog, ashes wet by rain, onion and garlic, or cheap perfumes. Let me take gas as an example.

别人不喜欢的有许多气味我都喜欢，雾的轻微的霉气，雨打湿的灰尘，葱蒜，廉价的香水。

Using silicon and metallic iron,α-Si_3N_4 olivary microparticles with a diameter of about 300～500 nm have been obtained at 650℃.When silicon and metallic aluminium were used to react with ammonium chloride,α-Si_3N_4 nanowire bundles with diameter of about 8 nm can be also obtained at 600℃.Since all of the starting materials used are relatively cheap,the methods will have potential prospect in industrial application.3.Graphite-like carbon nitride nanowire bundles with diameters of 200-500 nm were synthesized from the solid state thermolysis of melamine at relatively low temperature(400℃).

相关研究工作的成果发表在International journal of applied ceramicstechnology.2、以廉价的硅铁合金和氯化铵为原料，在600℃合成了α相的氮化硅纳米线束，单根纳米线直径8 nm，长达800 nm，考察了反应温度和反应时间对产物纯度和形貌的影响；以硅粉和铁粉为原料合成了纯度良好，直径为150～500 nm的α-Si_3N_4亚微粒子；以硅粉和铝粉为原料在400-600℃合成了直径为10 nm左右的α相氮化硅纳米线束。

Instead of environmentally toxic chromium oxidant, singlet oxygen generated photochemically was used as environmentally friendly and benign oxidizing agent to accomplish the transformation of pseudodiosgenin diacetate to diosone efficiently in a low toxic and less expensive solvent acetone.

裂解薯蓣皂甙元所得的假薯蓣皂甙元，在低毒且廉价的丙酮溶剂中，在光敏剂和光的存在下，与氧气反应，得到的产物再经酸解消除反应得到合成其它多种甾族药物的重要前体16-脱氢孕烯醇酮醋酸酯。

Since you bought discount tires online because you wanted to take advantage of the cheap prices, you don't want to end up forking up more money when you are forced to dispose off the tire you just bought for another new one.

既然你买的折扣轮胎在线，因为你想利用廉价的价格，你不想最终分叉了更多的钱时，被迫处置了轮胎您刚才买的另一台新的。

Chapter 2, the second period, after getting into modern age, when Qing Dynasty still infatuates with in "day with an upward exposure country" of beautiful in a dream time, the western imperial powers uses the front door that the hard ship benefit cannon opened to close the border to lock country.

廉价的商品，先进的科学技术，眼花缭乱的各种西方思想观念，不但改变了国人的生产方式，而且颠覆了他们灵魂深处的意义世界。

Recall that, in the Kolmogorov axiomatization, measurable sets are the sets which have a probability or, in other words, the sets corresponding to yes/no questions that have a probabilistic answer.

延期开工的Kolmogorov宣布要衡量所有套职能有限许多坐标限制在于衡量子寅。换句话说，如果是/否的问题回答f可看的价值观念在许多最有限坐标，然后它有一个概率的答案。

The experimental results showed that the algorithm can filter singular points and remain fixity of the target edge.

实验表明：基于模糊理论的图像智能滤波方法比常规图像滤波方法运算量小，它既能去除奇异点，又能保持图像中目标的边缘不变性，具有很好的滤波效果。