Database error: Invalid SQL: select count(id) from pwn_comment where catid='11' and rid='231'
MySQL Error: 145 (Table '.\szlezze\pwn_comment' is marked as crashed and should be repaired)
#0 dbbase_sql->halt(Invalid SQL: select count(id) from pwn_comment where catid='11' and rid='231') called at [D:\wwwroot\lezze\wwwroot\includes\db.inc.php:54] #1 dbbase_sql->query(select count(id) from {P}_comment where catid='11' and rid='231') called at [D:\wwwroot\lezze\wwwroot\shop\module\ShopContent.php:129] #2 ShopContent() called at [D:\wwwroot\lezze\wwwroot\includes\common.inc.php:551] #3 printpage() called at [D:\wwwroot\lezze\wwwroot\shop\html\index.php:13]
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in D:\wwwroot\lezze\wwwroot\includes\db.inc.php on line 61
Database error: Invalid SQL: select sum(pj1) from pwn_comment where catid='11' and rid='231'
MySQL Error: 145 (Table '.\szlezze\pwn_comment' is marked as crashed and should be repaired)
#0 dbbase_sql->halt(Invalid SQL: select sum(pj1) from pwn_comment where catid='11' and rid='231') called at [D:\wwwroot\lezze\wwwroot\includes\db.inc.php:54] #1 dbbase_sql->query(select sum(pj1) from {P}_comment where catid='11' and rid='231') called at [D:\wwwroot\lezze\wwwroot\shop\module\ShopContent.php:135] #2 ShopContent() called at [D:\wwwroot\lezze\wwwroot\includes\common.inc.php:551] #3 printpage() called at [D:\wwwroot\lezze\wwwroot\shop\html\index.php:13]
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in D:\wwwroot\lezze\wwwroot\includes\db.inc.php on line 61
Database error: Invalid SQL: select * from pwn_comment where iffb='1' and catid='11' and pid='0' and rid='231' order by dtime desc limit 0,5
MySQL Error: 145 (Table '.\szlezze\pwn_comment' is marked as crashed and should be repaired)
#0 dbbase_sql->halt(Invalid SQL: select * from pwn_comment where iffb='1' and catid='11' and pid='0' and rid='231' order by dtime desc limit 0,5) called at [D:\wwwroot\lezze\wwwroot\includes\db.inc.php:54] #1 dbbase_sql->query(select * from {P}_comment where iffb='1' and catid='11' and pid='0' and rid='231' order by dtime desc limit 0,5) called at [D:\wwwroot\lezze\wwwroot\shop\module\ShopComment.php:46] #2 ShopComment() called at [D:\wwwroot\lezze\wwwroot\includes\common.inc.php:551] #3 printpage() called at [D:\wwwroot\lezze\wwwroot\shop\html\index.php:13]
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in D:\wwwroot\lezze\wwwroot\includes\db.inc.php on line 61
特种电缆RS485型现场数据总线电缆-深圳市莱泽科技有限公司
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特种电缆RS485型现场数据总线电缆
编号:AP0150
品牌:爱普华顿   [查询该品牌全部商品]
单位:个
重量:1000 克
商品售价:¥0.00
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商品介绍
详细资料
执行标准 :GB/T16657.2-2008 GB/T19666-2005
特性阻抗:120±15Ω
最小弯曲半径:≥电缆外径 15 倍
工作温度:-40℃至 70℃

产品应用

本产品适用于交流额定电压 300V 及以下照明、电动工具等所必须的电源,还能同时传输各种控制信号 , 直流电压 1000V 及 以下传输音频信号,以及固定敷设的铁路信号和某些自动装置用传输控制线路。

使用特性

1.标称特性阻抗: 120Ω
2.1kHz 时的标称电容 ( 导体 - 导体 ): 42nF/km
3.1kHz 时的标称电容 ( 导体 - 导体 & 屏蔽 ) : 75.5nF/km
4.20℃时导体的直流电阻: ≤ 90.9Ω/km
5. 标称传播速度: 66%
6. 标称延迟时间: 5.25ns/m
7.1MHz 时的标称衰减: 19.7dB/km
8. 最大工作电压: 300V
9. 推荐最大工作电流: 2.1A (@25℃ )

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