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KEYSIGHT是德科技高频有源差分探头1130B/1131B/1132B/1134B 高速差分或单端探测 KEYSIGHT是德科技高频有源差分探头1130B/1131B/1132B/1134B 高速差分或单端探测 品牌：KEYSIGHT 美国 产地：美国 带宽：1.5 GHz~7GHz；动态范围：+/- 2.5V；直流偏移范围：使用探头偏移时为 +/- 12V；最大输入电压：峰值 30V 画册 说明书 详情
KEYSIGHT是德DP0001A高压差分探头 400MHz高频隔离探头2000Vrms/6000V过冲 KEYSIGHT是德DP0001A高压差分探头 400MHz高频隔离探头2000Vrms/6000V过冲 品牌：KEYSIGHT 美国 产地：美国 400 MHz高带宽；2,000 Vrms 主隔离，6,000 V 瞬态过压；4种衰减比：50:1、100:1、250:1 或 500:1 画册 说明书 详情
KEYSIGHT是德科技Hi-Z无源单端探测系统PP0003A示波器高压探头 1GHz高频30Vrms（MMCX接口） KEYSIGHT是德科技Hi-Z无源单端探测系统PP0003A示波器高压探头 1GHz高频30Vrms（MMCX接口） 品牌：KEYSIGHT 美国 产地：美国 PP0003A 是一款带有 MMCX 探头尖端的 Hi-Z+ 探头，可轻松连接到 MMCX 接口，以探测高达 1 GHz 带宽和 30 Vrms 的信号 画册 说明书 详情
KEYSIGHT是德科技Hi-Z无源单端探测系统PP0002A示波器高压探头 800MHz高频1200Vrms KEYSIGHT是德科技Hi-Z无源单端探测系统PP0002A示波器高压探头 800MHz高频1200Vrms 品牌：KEYSIGHT 美国 产地：美国 PP0002A 是一款高压无源探头，具有 800 MHz 的模拟带宽和小于 2 pF 的电容负载，同时提供前所未有的 1200 Vrms 输入电压。 画册 说明书 详情
KEYSIGHT是德科技Hi-Z无源单端探测系统PP0001A被动电压探头 1GHz高频300Vrms KEYSIGHT是德科技Hi-Z无源单端探测系统PP0001A被动电压探头 1GHz高频300Vrms 品牌：KEYSIGHT 美国 产地：美国 PP0001A Hi-Z+ 探头（1.3 米）允许您探测高达 1 GHz 带宽（<4 pF 输入电容）和 300 Vrms、10 MΩ 低频输入阻抗的信号 画册 说明书 详情
KEYSIGHT是德科技 N2790A高压差分探头 100 MHz高频1400V有源隔离电压探头 KEYSIGHT是德科技 N2790A高压差分探头 100 MHz高频1400V有源隔离电压探头 品牌：KEYSIGHT 美国 产地：美国 100 MHz带宽；1400 V 差分电压和最高 1000 V 共模电压的浮动信号测量 画册 说明书 详情

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SELECT `name` FROM `brand` WHERE `id` = 27 LIMIT 1 [ RunTime:0.000157s ]
SELECT `first` FROM `brand` WHERE ( isshow = 1 ) GROUP BY `first` ORDER BY `first` ASC [ RunTime:0.000293s ]
SHOW FULL COLUMNS FROM `product` [ RunTime:0.000397s ]
SELECT COUNT(*) AS think_count FROM `product` `a` LEFT JOIN `brand` `b` ON `a`.`brand_id`=`b`.`id` WHERE ( a.isshow = 1 AND a.type_id = '1' AND a.brand_id = '27' ) LIMIT 1 [ RunTime:0.000401s ]
SELECT `a`.`id`,`a`.`name`,`a`.`intro`,`a`.`img`,`a`.`place`,b.name brand_name FROM `product` `a` LEFT JOIN `brand` `b` ON `a`.`brand_id`=`b`.`id` WHERE ( a.isshow = 1 AND a.type_id = '1' AND a.brand_id = '27' ) ORDER BY `a`.`list_order` DESC,`a`.`id` DESC LIMIT 0,12 [ RunTime:0.000351s ]
SHOW FULL COLUMNS FROM `theme_file` [ RunTime:0.000441s ]
SELECT * FROM `theme_file` WHERE `theme` = 'default' [ RunTime:0.000184s ]
SHOW FULL COLUMNS FROM `theme` [ RunTime:0.000375s ]
UPDATE `theme` SET `name` = 'simpleboot3' , `version` = '1.0.2' , `demo_url` = 'http://demo.thinkcmf.com' , `author` = 'ThinkCMF' , `lang` = 'zh-cn' , `author_url` = 'http://www.thinkcmf.com' , `keywords` = 'ThinkCMF模板' , `description` = 'ThinkCMF默认模板' WHERE `theme` = 'default' [ RunTime:0.024649s ]
SELECT `more`,`file`,`id` FROM `theme_file` WHERE `theme` = 'default' AND ( `is_public` = 1 OR `file` = 'portal/product/list' ) ORDER BY `is_public` DESC [ RunTime:0.000310s ]

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