The pile repletion measurement, drilling, the embedment of the steel casing and pile drilling are emphasized.强调了桩位复测、护筒埋设 、 钻孔 、 成孔等每道工序在检查过程中需注意的问题.The difficulty also becomes greater. The depth of embedment at the tunn...
The voltage regulation characteristic of autotransformer, external compensation of zero sequence current for three Y au.论证自耦变压器的电压调整性能 、 三Y型 自耦变压器的零序电流外补偿、自耦变压器继电保护整定的特殊问题.The alternating current was sent to the input en...