lead column meaning in Chinese
铅塔
Examples
- Why would a reverse index be useful when the leading column of the index is generated from a sequence
当索引第一列由序列产生，一个逆序索引有什么用？ - This is the reason why reversing the index when its leading column is fed by a sequence reduces buffer contention , removes the hot block problem and by doing so , reduces the potential for buffer busy waits on a multi - user system
这正是为何当前导（ /起始）列由序列生成时索引的逆序处理可以降低缓存争用，解决热块问题，并且这样做可以在一个多用户系统中减少缓存忙等待的机会。 - In order to solve the problems effectively , under the auspices of 863 plan in china , the synthesis diagnosis has been carried by means of measuring and numerical imitating the combustion chamber of refining column , and some conclusions is such as : ( 1 ) through measuring the temperature and combustion in the burning chamber of the refining column , the result shows the temperature difference on the same level is more than that in height direction , and there is a few of co in bottom of burning chamber . ( 2 ) in order to ensure normal work of flue system in lead column in the course of zinc refining , theoretic calculation and measure about the flow resistance of exhaust gas are carried through . the results of study reveal that drawing out force of chimney is inadequate , which is mainly caused by illogicality of flue construction
在研究过程中，采取了现场实测和数值仿真手段对韶关冶炼厂锌精馏铅塔燃烧室及排烟系统进行了综合诊断，具体结果包括如下： ( 1 )完成锌精馏铅塔燃烧室内温度测试以及燃烧状况的测试，结果发现：铅塔燃烧室内水平方向的烟气温度并非均匀，而且其温差比上下方向的温差更大，以及铅塔燃烧室尾部存在co未燃烬问题； ( 2 )为了保证铅塔烟气系统的正常工作，对烟道系统的阻力进行了理论计算及测试分析，结果发现：锌精馏铅塔烟气系统中烟囱抽力不够，这主要是烟道结构不合理所造成的。 - But the temperature difference at the vertical direction in combustion chamber in lead column , that is said by operator , is over 60 ? . ( 2 ) according to the experiences in the practice , the second layer air and the second layer gas had a little effect of support burning , and the third air has little effect for combustion , and the power to drawing exhaust gas can only be adjusted in limited range . the problems , it is said above , restricted more advance of some kinds of technology and economy target in spelter refining in new jersey furnace
由于锌精馏炉产量提高，一些问题开始暴露出来： ( 1 )燃烧室?舶要求温度差不超过10 ，而从现场反映的情况来看，燃烧室上、中、下部温度差已超过60 ； ( 2 )在生产实践中，发现燃烧室第二层空气、第二层煤气作用甚小，第三层空气失去助燃作用，废气出口的抽力可调范围有限；以上这些问题在客观上制约了精馏塔在锌精炼中各项技术经济指标的进一步提高。