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Methods Salicylic acid and acetic anhydride were used as the raw materials, with concentrated sulfuric acid as the catalyst.

目的 建立乙酰水杨酸的快速合成方法。

Acetic anhydride was a very important chemical raw material, which was widely used in many fields of the national economy. There were more preparation methods for acetic anhydride, however, using coal into an important chemical materials was the states key research project.

醋酸酐是非常重要的化工原料，广泛的运用于国民经济多个领域，制备方法比较多，但利用煤炭转化为重要的化工原料是国家重点研究项目。

Company BDO is the world's most advanced to calcium carbide acetylene butanediol as raw material production facilities.

公司BDO是全球最先进的以电石乙炔为原料的丁二醇生产装置。

Reasonable ratio of raw materials, so that fat soybean fatty acid and phospholipid ratio of more reasonable and improve the utilization of extruded soybean.

合理的原料配比，使大豆脂肪中不饱和脂肪酸和磷脂的比例更合理，提高了膨化大豆的利用率。

It is reported that phosphate rock raw material for the production of phosphoric acid, phosphate rock the world's total reserves of about 45.78 billion tons.

据悉，磷矿是生产磷酸的原料，目前世界磷矿石总储量约457.8亿吨。

The results showed that after acidification of the raw material after the preparation of Fe2O3 Desulfurization of better performance.

结果发现经过酸化后的Fe2O3原料所制取的脱硫剂脱硫性能较好。

Results The examination of raw materials, sterilization, fermentation, cryopreservation, processing device, containers, packing materials and asceptic manipulation were the main factors influencing the hygienic quality of acidophilus milk.

结果 确定原料验收、杀菌、发酵、冷藏、加工设备、容器及包装材料的消毒、灌装环境和无菌操作是影响酸牛乳卫生质量的主要原因，为关键控制环节。

With the raw material of glucose and catalyst of amide, the technology of the preparation of acidproof caramel color was studied.

对以葡萄糖为原料，复合氨基化合物为催化剂制备耐酸型焦糖色素的工艺进行了研究，在单因素实验基础上，通过正交实验得出较好的工艺条件为糖液浓度60%、保温温度145℃、保温时间3h、催化剂用量5%，得到色率达163626，带负电荷的耐酸焦糖色素产品。

Acidproof raw starch-digesting glucoamylase ; Aspergillus fumigates ; properties of enzyme ; fermentation condition

耐酸生淀粉糖化酶；烟曲霉；酶的性质；发酵条件

Finally, the problems to be resolved about raw materials, low cost, design and evaluation in ACM were discussed.

最后，重点讨论了复合材料的原材料技术、低成本技术、设计／评价一体化技术等亟待解决的问题。

Connectors are lines that can be anchored to particular places, called glue points , on the graphic object.

连接符，可固定在图形对象的特定的地方的线条。

Another way of putting it, too many agents have a say in each other's work, and bureaucratic rigor mortis sets in.

另一种表达是，太多的作用物在彼此的工作里都有话语权，官僚的僵尸开始抬头。