pythonDataFramepct_change（）pythonDataFramepct_change（）Pandas dataframe.pct_change()函数计算当前元素与先前元素之间的百分⽐变化。默认情况下，此函数计算前⼀⾏的百分⽐变化。注意：此功能在时间序列数据中最有⽤。⽤法： DataFrame.pct_change(periods=1, fill_method=’pad’, limit=None, freq=...
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WENGLOR WM03PCT2 Vahle 165264 Vahle 165277 Bornebusch ∮60.0/75.0/85.0*45.0/8.0 baumer Z 141.001 Beinlich ZPA4-149.00-N/4-149.00-N-R-F-B/R ARCA 827A.E2-AKH-M10-G IP66 FAG HCRS7014-DDLR-T-P4SUL Boellhoff 10530106000 AirLoc 1.19141.91 Baruffaldi type:13 code:1314.111.01 baumer HOG10...
注册资本: 企业类型:个体经营 公司地区:中国 广东 佛山 主营产品:计数器,温控器,马达,控制器,低压开关,工业自动化配件 进入店铺 产品分类 超声波焊机 板牙 DCS/分散型 相关产品更多>> 供应:`ELPRO`ELPROTECH`无线传输模块405U天线ELPRO 供应:`MORITEX`光源控制器MLEK-D770 ...
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型号UCPQ—G(带屏蔽)电压等级1000V连续载流量138A芯线标称3x35+1x16+4x4电缆外径φ45.26mm1.1高压箱结构高压箱分为两个腔体,从采空侧看,箱体左侧连线的是接线腔,右侧是隔爆腔。它们之间由3300V单芯过墙电缆及多芯过线组来联系。在接线腔中用于进出线的喇叭口共十个。采空侧两个大喇叭口,引入1W电缆,另一备用...
WEIGEL 电压表 PQ96K 4-20mA:=0-250V WEIGEL 电压表 PQ96K-+/-30VDC Weigel 功率放大器 DAS10-40PR 有照片 weingrill 17800 weingrill 17800 N.C weingrill 17800 N.O WEINGRILL 17800N.C. WEINGRILL 17800N.O. WEINREICH 0420SC000+3502HM001 Weinreich Industriekuehlung GmbH Name??Safety limiter ...