Emptying the mainballast tank by compressed air is one of the important control measures for underwater dynamic anti-sinking.
高压气吹除主压载水舱是潜艇水下动力抗沉的重要操纵手段之一。
2
The elastic rigidity of rail pad and ballast stiffness of rail and clamping force of fastener are the main factors that cause the widening of gauge.
钢轨垫层和道床的刚度、轨刚度和扣件扣压力是影响轮轨之间作用力和轨距扩大的主要因素。
3
Ballast water is the main invasion way of alien aquatic organisms. The complex effects caused by the aquatic organisms via ballast water have attracted world wide attention.