根据口诀，95平方铜线的载流量相当120平方铝线的载流量。 300A。所以95平方铜线的载流量为300A。 更加方便的方法是直接查下面的电缆载流量关系，可得95平方铜线载流量为237A,和计算值相当接近。 二点五下乘以九，往上减一顺号走。 三十五乘三点五，双双成组减点五。 条件有变加折算，高温九折铜升级。 穿管根数二三四，八七六折满载流。 口诀第一句意思是：2.5平方及以下的各种截面铝芯绝缘线，其载流量为截面数的9倍。
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22.5(A)。从4平方及以上导线的载流量和截面数的倍数关系是顺着线号往上排，倍数逐次减1，即4×8、6×7、10×6、16×5、25×4。 122．5(A)。从50平方及以上的导线，其载流量与截面数之间的倍数关系变为两个两个线号成一组，倍数依次减0． 5，即50、70平方导线的载流量为截面数的3倍，95、120平方导线的载流量是其截面积数的2.5倍，依次类推。 口诀第三句意思是：口诀适用的条件为“铝芯绝缘线、单根明敷、环境温度25℃”。 若铝芯绝缘线明敷在环境温度长期高于25℃的地区，导线载流量可按上述口诀计算方法算出，然后再打九折即可。 当使用的不是铝线而是铜芯绝缘线，它的载流量要比同规格铝线略大一些，可按上述口诀方法算出比铝线加大一个线号的载流量。 如16平方铜线的载流量，可按25平方铝线的载流量计算。 口诀第四句意思是：在穿管敷设两根、三根、四根电线的情况下，其载流量按口诀中载流量（单根敷设）的80%、70%、60%计算。
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Can I use 7-Zip in a commercial organization? Yes, 7-Zip is free software. You can use it on any computer. How can I set file associations to 7-Zip in Windows 7 and Windows Vista? You must run 7-Zip File Manager in administrator mode. Right-click the icon of 7-Zip File Manager, and then click Run as administrator. Then you can change file associations and some other options. Why 7z archives created by new version of 7-Zip can be larger than archives created by old version of 7-Zip? New versions of 7-Zip (starting from version 15.06) use another file sorting order by default for solid 7z archives. Old version of 7-Zip (before version 15.06) used file sorting «by type» («by extension»). Parameters field in «Add to archive» window, (or -mqs switch for command line version). You can get big difference in compression ratio for different sorting methods, if dictionary size is smaller than total size of files.
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If there are similar files in different folders, the sorting «by type» can provide better compression ratio in some cases. Note that sorting «by type» has some drawbacks. For example, NTFS volumes use sorting order «by name», so if an archive uses another sorting, then the speed of some operations for files with unusual order can fall on HDD devices (HDDs have low speed for «seek» operations). Increase dictionary size. It can help when ‘qs’ is not used. Specify ‘qs’ in Parameters field (or use -mqs switch for command line version). If you think that unusual file order is not problem for you, and if better compression ratio with small dictionary is more important for you, use ‘qs’ mode. Why can’t 7-Zip open some ZIP archives? In 99% of these cases it means that the archive contains incorrect headers. Other ZIP programs can open some archives with incorrect headers, since these programs just ignore errors.
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