黎曼解涉及的经典基本波包括疏散波、激波和接触间断。
The classical elementary waves in Riemann solutions include rarefaction wave, shock wave and contact discontinuity.
他的听力仍然良好，因此他与世界的接触没有间断。
His hearing remained good, so that his contact with the world was uninterrupted.
他们秘密地与孩子接触，多年间断地提供所必须的训练。
They make private contact with the child, providing years of discrete training as needed.
控矿因素为地层、岩浆岩及构造，其中层间断裂与接触带构造是主要的容矿构造。
Control factors of mineralization are strata, magmatites and structure. Interformatinal faults and contract zone are mainly including ore structures.
ZJB200A系列直流接触器适用于电瓶车、电动叉车、电动铰盘、电动汽车、挖掘机、汽车空调、通讯电源、不间断电源等系统。
ZJB200A is applicable for electric control system as eletrombile, motor forklift, grab vehicle , air conditioner, communication power supply and UPS.
所有元器件均来自一个品牌，包括真空断路器，空气断路器，电流接触器，热继电器，驱动，可编程控制器，输入输出模块，电站管理系统继电器和仪表，不间断电源，传感器和照明器材。
All of components come from one brand, from vacuum circuit breakers, air circuit breakers, contactors, thermal relays, drives, PLC, I/O, PMS relays and meters, UPS, sensors and lighting fixtures.
所有元器件均来自一个品牌，包括真空断路器，空气断路器，电流接触器，热继电器，驱动，可编程控制器，输入输出模块，电站管理系统继电器和仪表，不间断电源，传感器和照明器材。
All of components come from one brand, from vacuum circuit breakers, air circuit breakers, contactors, thermal relays, drives, PLC, I/O, PMS relays and meters, UPS, sensors and lighting fixtures.
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