本文介绍了用重氮转移法合成具有较大空间位阻的重氮乙酸二环己基甲酯、L- 薄荷酯和叔丁酯。
Synthesis of sterically hindered dicyclohexylmethyl, L menthyl and tert butyl diazoacetate by diazo transfer was described on this paper.
研究了液体环氧、粉末环氧包封高压高阻电阻器后，电阻器主要电性能的变化。
The changes of electrical characteristics after being coated in liquid epoxy resin or powdered epoxy resin are investigated.
在不同阻聚剂用量、投料比、投料方式等条件下合成环氧丙烯酸酯。
The epoxy acrylate was synthesized with different amounts of inhibitor, feed ratios and feeding modes.
定性分析了高阻硅探测器表面漏电流的产生，同时介绍了一种有效降低漏电流的方法，即保护环结构。
This paper analyzes the reason producing surface leakage current of high resistivity detector, and adopts guard ring to reduce the leakage current.
在计算排出口压力计算过程中，考虑了由于抽油杆柱旋转引起杆管环空气液两相流摩阻的影响。
To calculate discharge port pressure, this article considers the influence on frictional pressure drop in the gas and liquid two-phase flow between rod and tubing owing to rotation of rods.
该催化剂适用于各种脂肪酮、芳香酮、杂环酮和位阻酮。
This approach covers the substrate range of aliphatic, aromatic, heterocyclic and steric hindrance ketones.
针对济南市引黄供水穿黄顶管的复杂工况，详细介绍了以二段无铰式工具管为头部的顶管施工工艺及中继环、泥浆减阻等先进技术的使用。
According to the complication of pipe-jacking crossing the Yellow River some techniques such as twin-pipe joined without hinging, relay ring, slurry damper are applied.
聚环氧琥珀酸(PESA)是一种新型的无磷有机阻垢缓蚀剂。
Polyepoxysuccinic acid (PESA) is a new kind of scale and corrosion inhibitor which does not contain phosphorus.
通过在各截面突变处设置管口导流环会有很好的降阻效果。
Performance of fluid can be improved remarkably by adding diversion annuluses within the tube segments where the cross section suddenly changes.
为保证碳筋不出现滑移，软金属管和碳筋间的摩阻角应大于锚环锥角和夹片与锚环之间的摩阻角之和；
To avoid slip of CFRP bars, the friction angle between soft metal pipe and CFRP bars should be larger than the sum of barrel's conical angle and friction angle between wedge and barrel.
分析了功率型LED热阻系统的构成，对采用银浆和环氧胶作为芯片键合材料的功率型LED热阻进行了对比研究。
The thermal resister of power LED is analyzed in this paper. Using the silver paste and epoxy resin as die bonding materials, two kinds of power LEDs are made.
结果表明，聚环氧琥珀酸对硫酸钡、硫酸锶具有较好的阻垢性能。
The experimental results indicate that polyepoxysuccinic acid has excellent scale inhibiting performance to barium sulphate and strontium sulphate.
静电水处理能显著提高聚环氧琥珀酸的阻垢性能。
Electrostatic water treatment can significantly increase the scale inhibition performance of PESA.
结果以圆形阻射光斑和环圈确定的机械耳点与解剖耳点的重叠率分别为30 %和6 8%。
Results The rates of superposition of Po-a and Pom determined by two different methods were 30% and 68%, respectively.
结果表明，聚环氧琥珀酸对硫酸钡、硫酸锶具有较好的阻垢性能。
Study on the synthetic process and scale inhibition performance of waste itaconic acid polymer;
分析了日本帝人公司生产的P75 -2 4A螺杆挤压机套筒镶套磨损的原因是环结阻料或异常卡车 ，提出减少磨损的几条措施。
The reasons for wear and tear of the inlay sleeve of sleeve of P75\|24A screw extruder made in Japan were analyzed, and some measures to reduce wear and tear of the inlay sleeve were proposed.
分析了日本帝人公司生产的P75 -2 4A螺杆挤压机套筒镶套磨损的原因是环结阻料或异常卡车 ，提出减少磨损的几条措施。
The reasons for wear and tear of the inlay sleeve of sleeve of P75\|24A screw extruder made in Japan were analyzed, and some measures to reduce wear and tear of the inlay sleeve were proposed.
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