via control inputs or RF sensing. Protection and monitoring circuitry is extensive and foolproof, letting you focus on the job at hand — breaking pileups and overcoming the most difficult operating conditions. And it wouldn’t be an Elecraft amp without robust PIN-diode T/R switching. Like ...
Soil water content (volumetric %) for 33kPa and 1500kPa suctions predicted at 6 standard depths (0, 10, 30, 60, 100 and 200 cm) at 250 m resolution
某井垂直井深2500m处发现天然气溢流。已知数据为:钻头直径215mm;5〞钻杆外径127mm,内径109mm;技术套管外径244mm,内径222mm;下至井深1500m处,地层破裂压力梯度为17.64kPa/m;钻井液密度为1.30g/cm3;关井前测得泵速为30冲/min;排量为16.4l/s时的循环泵压为6.4MPa;关
Product Name Wet and Dry Vacuum Cleaner Motor Brushless Brushless Voltage 220~240VAC Power 500~1200W Frequency 50Hz to 60Hz Phase Single-Phase Efficiency 45~75% Warranty 3months-1year Air Flow 45 Dm3/S Vacuum 22kpa Controller Extra Add Outside of Mo...
男性,45岁。少量饮酒后,突然大口呕吐鲜血1500ml。否认肝炎史。检查:血压10/5kPa(75/50mmHg),P130次/分,眼结合膜苍白。肝不大,脾肋下触不清。腹水()。Hb50g/L,该病人最适宜的诊断方法是() A.急症钡餐透视 B. 急症内窥镜检查 C. 选择性腹腔动脉造影 ...