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1)  once-tunneling
一次成巷
1.
Accounting to the conditions of upper plate and the base plate of the coal bed ,the once-tunneling technique is adopted in the drilling with the whole-anchor-supporting.
根据煤层顶底板条件 ,全锚支护切眼掘进采用一次成巷工艺。
2)  once-tunneling technique
一次成巷技术
3)  twice accomplished laneway
二次成巷
1.
Guide hole digging and twice accomplished laneway technology;
井巷导洞掘进二次成巷技术
4)  three times tunneling
三次成巷
5)  full-face one-step smooth blast tunneling technique
全断面一次光爆成巷技术
1.
This paper analyzes the conditions of adopting the full-face one-step smooth blast tunneling technique in the construction of the tunnel elongation,expounds the principles of selecting the technical parameters,and puts forward some concrete measures for guaranteeing the construction quality.
分析了井下开延巷道施工采用全断面一次光爆成巷技术的条件,阐明了其技术参数的选取原则,并提出了保证施工质量的具体措施。
6)  single firing
一次烧成
1.
The glazed roof tile with single firing reached the national standard GB9197-88 and industry standard of building materials JC/T765-2006.
3MPa琉璃瓦素坯,开发出与该坯体烧结温度一致的无铅琉璃瓦用釉,并采用一次烧成工艺制备出了达到国家建筑琉璃制品标准GB9197-88要求,及国家建材行业建筑琉璃制品标准JC/T765-2006要求的无铅琉璃瓦。
2.
A raw glaze has been successfully studied for bone china using in single firing,in the condition that has not lowered the prensentation quality and internal property of the product,lowered the cost.
研制成功了一种适合于骨质瓷一次烧成使用的生料釉,在不降低产品的外观质量与内在性能的情况下,降低了成本,节约了能源,开创了一条骨质瓷生产的新思路。
3.
The batches for glazed maiolica articles of single firing were synthesisel with lacal claies,the formation of bodies and glazes was discussed,and the time-temperature parameters were defined.
采用当地粘土合成了一次烧成施釉彩陶制品用坯料 ,研究了坯体和釉层的形成特点 ,并确定了制品的温度时间参
补充资料:成环加成聚合
分子式:
CAS号:

性质:又称环化聚合。多官能团单体在聚合过程中生成主链含有环状结构的聚合称为成环聚合。成环聚合又可分为缩聚成环和加聚成环两类。当分子内存在两个以上非共轭双键的烯类单体(如二甲基二烯丙基溴化铵)时,其链增长反应是发生在分子内的双键之间的加成反应,生成具有环状结构的聚合物,这种聚合就是成环加成聚合。

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