A PHP Error was encountered

Severity: Notice

Message: Undefined index: bid

Filename: controllers/Category.php

Line Number: 271

Backtrace:

File: /www/wwwroot/m.xyyhd.cn/app/controllers/Category.php
Line: 271
Function: _error_handler

File: /www/wwwroot/m.xyyhd.cn/index.php
Line: 344
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined index: id

Filename: controllers/Category.php

Line Number: 272

Backtrace:

File: /www/wwwroot/m.xyyhd.cn/app/controllers/Category.php
Line: 272
Function: _error_handler

File: /www/wwwroot/m.xyyhd.cn/index.php
Line: 344
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined index: title

Filename: controllers/Category.php

Line Number: 273

Backtrace:

File: /www/wwwroot/m.xyyhd.cn/app/controllers/Category.php
Line: 273
Function: _error_handler

File: /www/wwwroot/m.xyyhd.cn/index.php
Line: 344
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined index: simg

Filename: controllers/Category.php

Line Number: 274

Backtrace:

File: /www/wwwroot/m.xyyhd.cn/app/controllers/Category.php
Line: 274
Function: _error_handler

File: /www/wwwroot/m.xyyhd.cn/index.php
Line: 344
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined index: descs

Filename: controllers/Category.php

Line Number: 275

Backtrace:

File: /www/wwwroot/m.xyyhd.cn/app/controllers/Category.php
Line: 275
Function: _error_handler

File: /www/wwwroot/m.xyyhd.cn/index.php
Line: 344
Function: require_once

欧美a级suv大全免费看,免费啊v在线观看,久久久国产精品麻豆a片

成人午夜免费福利视频丨国产免费观看av丨一二三区在线丨日韩精品一级丨亚洲国产精品无码久久98丨中出あ人妻熟女中文字幕丨久久日韩乱码一二三四区别丨欧美大片抢先看丨巨胸喷奶水视频www丨女人高潮抽搐潮喷小视频丨日本少妇爱做按摩xxxⅹ丨在线视频精品中文无码丨亚洲国产成人a精品不卡在线丨九九九精品成人免费视频丨嫩草伊人久久精品少妇av丨亚洲色中文字幕在线播放丨波多野结衣 久久丨欧美第一页在线观看丨在线观看91av丨999成人国产

鋼鐵行業“三氣”的特點是什么?
2020.09.05
一、焦爐煤氣的特點
(1)焦爐煤氣的氣體組成:CH4:22~26%;CO2:2~4%;CO:6~10%;H2:55~60%;N2:1~3%
(2)焦爐煤氣熱值:4100~4400大卡/標方
  總結:富氫富甲烷氫多少碳

、高爐煤氣特點
(1)焦爐煤氣的氣體組成:CO2:20~25%;CO:22~30%;H2:1~3%;N2:50~57%
(2)焦爐煤氣熱值:750~900大卡/標方
  總結:熱值不高氮含量高

三、轉爐煤氣特點
(1)焦爐煤氣的氣體組成:CO2:15~20%;CO:40~65%;H2:1~3%;N2:10~35%
(2)焦爐煤氣熱值:1500~2000大卡/標方
  總結:熱值適中多碳少氫
熱門產品推薦
在線咨詢
在線咨詢