The high yield of propionic acid in mixed acid fermentation was the main reason for the low hydrogen production capacity.
混合酸发酵的发酵产物中丙酸含量较高是产氢能力偏低的主要原因。
A new process of manufacturing decorative aluminium plate is introduced. The figures were engraved by a newly developed mixed acid.
提出了采用耐酸油墨丝网印刷所需图案、混合酸刻蚀制备装饰性铝板的新方法。
Wash the wafers with mixed acid, lotion and UPW (ultra pure water) by ultrasonic cleaning in wet sinks to get a clean and dry surface of wafers.
用混合酸、清洗剂和纯水在清洗槽或超声波清洗机内清洗硅片，使其表面洁净并烘干。
Duplex stainless steel is used in high temperature environments, mixed acid environments, especially for the Marine, petroleum, chemical equipment.
双相不锈钢适用于高温环境，混合酸环境，特别适用于海洋，石油，化工设备。
Methods: Pretest samples using mixed acid, and magnesium was adopted as matrix modifier to determine by graphite furnace atomic absorption spectrometry.
方法：利用混合酸对样品进行消化处理，镁作为基体改进剂，石墨炉原子吸收光谱法测定。
According to the practice of nitrochlorobenzene production in our plant, the effects of composition of mixed acid, temperature and stir on nitrating reaction.
根据我厂硝基氯苯的生产实践，概述了混酸组成、温度、搅拌等因素对硝化反应的影响。
The stainless steel annealing and pickling process can product large quantity of waste mixed acid(HF/HNO3) that must be treated through acid purification system.
不锈钢生产退火酸洗过程会产生大量废混酸（HF/HNO3），通过酸净化系统对废酸进行处理。
The effects of raw materials, impurities, liquid-solid rate in slurry, SO3 concentration, temperature, mixed acid concentration on crystallization are mainly presented.
阐述原料组分及杂质含量、料浆液固比、料浆中的SO3浓度、反应温度、料浆混酸浓度等因素对结晶控制的影响。
The function modification of carbon nanotubes has been obtained by mixed acid and thionyl chloride treatment, spectral analysis present a contrast between treated CNTs and untreated ones.
分别采用混酸和氯化亚砜处理，实现了对碳纳米管不同的官能化修饰，并对处理前后的碳纳米管进行了光谱分析。
The simplex optimization method about nonlinear programming problem has been used in the mixed acid linear titration and the effect of various factors on computative speed has been discussed.
将非线性规划问题的单纯形加速法用于混合酸的线性滴定计算，同时优化酸浓度及有关条件常数，求出酸浓度的最优解。 讨论了影响单纯形法计算速度的因素。
The standard plant cabbage was digested by different mixed acid and determined quantitatively by ICP-AES in this paper, the suitable methods of digestion for different elements were confirmed.
用不同混酸对植物标样甘蓝进行消解并用ICP-AES法对其进行了定量分析，确定了各元素适合的样品处理方法。
The standard plant cabbage was digested by different mixed acid and determined quantitatively by ICP-AES in this paper, the suitable methods of digestion for different elements were confirmed.
用不同混酸对植物标样甘蓝进行消解并用ICP-AES法对其进行了定量分析，确定了各元素适合的样品处理方法。
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