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- low carbon carboxylic acid 低碳酸
- We don't make cutting tools from low carbon steel. 我们不用低碳钢制造切削刀具。
- Carboxylic acid esters are important chemical raw materials. 羧酸酯是重要的化工原料。
- For welding low carbon steel structres. 焊接低碳钢结构。
- Galvanized Low Carbon Steel Wire. 镀锌底碳钢丝。
- The carboxylic acid collector is the predominant one for its low price and the good performance of flotation in low temperature improved by surfactants as synergist. 其中羧酸类捕收剂由于低廉的价格,并采用表面活性剂为增效剂,提高了油酸钠或氧化石蜡皂的低温浮选性能,所以羧酸类捕收剂仍然是未来磷矿的主要捕收剂。
- Their defining features are an amino group (a nitrogen and two hydrogens) and a carboxylic acid group (a carbon, two oxygens and a hydrogen), both attached to the same carbon. 胺基酸的基本特徵是含有一个胺基(一个氮原子和两个氢原子)和一个羧基(一个碳原子、两个氧原子和一个氢原子),两个化学基连接在同一个碳原子上。
- Sulfuric acid is main catalyst for the synthesis of carboxylic acid esters. 羧酸酯的合成主要用硫酸作催化剂,但这种催化剂有许多缺点。
- It is very clear that low carbon steel can be easily machined. 低碳钢容易加工是很清楚的。
- Suitable for welding low carbon steel, low alloy steel structure. 适用于各种低碳钢、低合金钢构件的焊接。
- One exception is the decarboxylation of aromatic carboxylic acids. 芳香羧酸进行脱羧反应是一个例外。
- CFR uses low carbon, medium alloy steel as the matrix. CFR合金采用低碳、中合金钢成分为基体。
- The scheme initially involves acylation of thiophene using a carboxylic acid to afford the acyl thiophene. 这条路线是先用羧酸使噻吩已酰化制得酸基噻吩。
- Materials: high quality low carbon steel wire, PVC wire. 材料:优质低碳钢丝(镀锌、涂塑、喷塑)PVC丝。
- Electropulsing was employed to treat a low carbon microalloy steel. 研究了脉冲电流对一种低碳微合金钢的组织和力学性能的影响。
- Carboxylic acid was peroxidized in organic solvents catalyzed by lipase and glycidol was synthesized from allyl alcohol catalyzed by acid peroxide. 摘要利用脂肪酶在有机介质中催化制备过氧酸,丙烯醇在过氧酸的作用下发生环氧化反应生成环氧丙醇。
- Nitric acid oxidation was found to reduce the surface hydroxyl (OH) groups in increasing the carboxylic acid (COOH) groups. 硝酸氧化减少了碳纤维表面的羟基含量,同时增加了碳纤维表面的羧基含量。
- In the reaction, some aniline is completely oxidized to CO2 or partially oxidized to carboxylic acid. 在反应中有一部分苯胺被完全氧化或部分氧化成CO2或羧酸,
- The vanadium phase and valence state of stone-coal with low carbon in Guizhou province were analyzed by electron probe,and a pressure acid leach experiment was carried out. 利用电子探针分析方法对贵州某地低碳石煤中钒矿物和价态进行了分析,并对该矿石进行了加压酸浸试验研究。
- PVAC latex is prepared by the polymerization of the new type of ethylene carboxylic acid . 采用乳液聚合制备了新的丙烯酸改性的聚乙酸乙烯酯(PVAC)乳液。