目前，我国自行生产的都是采用力平衡原理的机械式和模拟电子技术的产品。
At present all the products made in our country based on mechanics balanced principle and analogue electronic technology.
结构为四柱导向，上压式，双油缸加机械平衡系统，保证了上下工作台之间的平行度。
The structure is four - pillar guide, up - packing, doublecylinder and machine balancing system. ensures the parallelism of upper and lower working sides.
分析了现有动平衡头的性能，提出了一种全新的纯机械式动平衡头。
The property of the existing balancing heads are analyzed, a new kind of balancing head, the pure mechanical on-line balancing head, is presented.
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