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Three phase parallel connection heating cables are suitable forthethermal insulation of pipes with big diameters, pipe lines in nets and tanks. 三相并联带一般适用于大管径，管网系统管线和罐体的伴热保温。
Phase failure protection: It is a safeguard acting immediately, which protects L1, L2, and L3 three phase against wrong connection sequence. 错相保护：防止L1、L2、L3三相交流电源相序接错的一种保护措施。
Phase opposite protection: It is a safeguard acting immediately, which protects L1, L2, and L3 three phase against wrong connection sequence. 错相保护：防止L1、L2、L3三相交流电源相序接错的一种保护措施。
Note 1 Single display the three phase total active power. 注1:单屏显示三相总有功功率。
Three phase wiring saves 50% of power compared with one-phase. 三相电源比单相电源可省电逾50%25之多。
Is the stator three phase line voltage the same? And is it current zero? 定子三相电压是否相等?其电流是否为零?
This control method was applied to a three phase AC/DC/AC conversion system. 该控制思想在三相AC/DC/AC系统中进行了实验验证。
Minsky divided the process into three phases. 明斯基将该过程划分为三阶段。
Choose the cable type according to power supply condition and power net load ,decide if use parallel connection or series connection type cables, single phase or three phase type cables. 根据供电条件、电网负荷及电伴热带使用长度等因素来选择电伴热带的型式、电压等级，以便确定是用并联式还是串联式?
Phase opposite protection: It is a safeguard acting immediately, which protects L1, L2,L3 three phase against wrong connection sequence. In this case, the yellow indicator light will be lighted. 错相保护：防止L1、L2、L3三相交流电源相序接错的一种保护措施。即时动作。指示灯形式为：黄灯亮；
The main circuit topology of three phase DVR is analyzed,the design method of the parameters of the main circuit is presented and different ways of transformer winding connection are compared. 针对以往研究的三相动态电压恢复器,提出基于三相电压型逆变电路的动态电压恢复器,并分析其主电路拓扑,提出主电路几项参数的设计方法,同时对比不同变压器接法对参数和电路性能的影响。
Reversed phase protection: It is a safeguard acting immediately, which protects L1, L2, and L3 three phase against wrong connection sequence.In this case, the red indicator light will be lighted. 错相保护:防止L1;L2;L3三相交流相序接错的一种保护措施.;即时动作
These services are divided into the following three phases: call setup,call connection,and call release. 这些业务氛围下面三个阶段：呼叫建立、呼叫连接和呼叫释放。
At last the crack that it has formed in the steel based phase connects back and forth cracks of it by bridging. 最后,在钢基体相中形成的裂纹以“搭桥”方式将其前后的裂纹连接起来。
Eventing is an equestrian sport consisting of three phases. 综合全能马术赛，包括三个阶段，第一，越野比赛。
Will be conducted in three phases aquaculture breeding project. 公司将分三期进行养殖繁育工程建设。
Steam, water and ice constitute the three phases of one substance. 水蒸汽、水和冰是同一物质的气体、液体、固体三个相态。
These services are divided into the following three phases: call setup, call connection, and call release. 这些业务氛围下面三个阶段:呼叫建立、呼叫连接和呼叫释放。
A three phase symmetry AC winding is used as control winding of the inner stator, a car including ring-like PM rotor as correcting weight. 以三相对称交流绕组作为内定子控制绕组，包括环形磁钢永磁转子的小车作为校正质量。
The three phase immiscibility of Fanshan magma resulted in the formation of three phosphorus ore zones. 矾山岩浆的三相不混溶作用导致了矾山三个矿带的形成。