ground wall meaning in Chinese

地下墙

The boys chalked out goalposts on the sports ground wall
男孩子们在运动场边的墙上用粉笔画上了球门柱。
Secondary crushing is carried out in the lower section between the rotor and the grinding wall
在转子和磨碎壁之间的下半部区间，给料被进一步地破碎。
After entering the crushing radius of the rotor , the feed material is grasped by the flexible beater heads , thrown against the grinding wall and crushed gradually
给料在进入转子的振击范围后，被运转的锤头席卷，接着就被击向磨碎壁而破碎。
As grinding walls are arranged on both sides , the direction of the rotor can be changed reversible design so that the beater heads can be used to the optimum
由于两边都装有磨碎壁，使得转子的旋转方向可以被调节可逆转,因此，锤头也就经久耐用。
After entering the crushing radius of the rotor , the feed material is grasped by the flexible beater heads and crushed by the force of its impact by being thrown against the grinding wall
给料在进入转子的振击范围后，被运转的锤头席卷，接着就被击向磨碎壁而破碎。由于转子可逆转以及两边都装有磨碎壁，使得锤头