化学预处理 meaning in English
chemical priming
Examples
- The methods could be divided into physical pretreatment methods , chemical pretreatment methods and interlayers method according to their principles
按其原理来分，预处理方法可分为物理预处理法、化学预处理法以及中间层法。 - Aldononitrile acetates and alkaline nitrobenzene oxidations were used to analyze the change of structuia1 polysaccharides and composition of lignin in 80 % ethanol - extracted rice straw treated with sodium hydroxide , ammonium bicarbonate , or urea
摘要以氢氧化钠、碳酸氢铵和尿素处理的稻草为研究对象，采用糖腈乙酰酯法和碱性硝基苯氧化法，分别测定了化学预处理前后稻草用80 %乙醇浸提残渣中结构性多糖和木质素组分的变化。 - According to the theory of developing viscous crude with screw pump and combined with the reservoir characteristic and oil property , fault block 70 is developed reasonably and effectively through a series of corollary technique including chemical pre - processing in the formation , viscosity decrease in the well bore , down - hole anchoring of screw pump , optimized design of screw pump , reasonable determination of the turning rate of screw pump , frequency alternating control , heat exchange and viscosity decrease in well head , monitoring of screw pump
依据螺杆泵开采重油的理论，结合泽70断块稠油油藏的特点和原油物性，通过实施地层化学预处理、井筒降粘、螺杆泵井下锚定、螺杆泵优化设计、螺杆泵合理转速的确定、变频控制、井口换热降粘、螺杆泵监测等一系列螺杆泵配套工艺技术，使泽70断块得以合理有效的开发。 - These results indicated that chemical treatments may cleavage the linkages between lignin and polysaccharides , and between monomers of lignin , which results in the decrease of compositions of lignin in primary and secondary wall of rice straw , and hence increases the degradation rate of secondary wall and degree of primary wall degradation observed under histological investigation
上述结果表明，化学预处理通过破坏木质素与结构性多糖、木质素单体之间的连接，导致细胞壁各层的木质素组分不同程度的下降是化学预处理后稻草亚细胞结构变化的化学基础所在。