A novel 3d laser ball bar (3d LBB) has been developed to determine the shaft or tool point positions rapidly and easily.
研制了一种三维激光球杆装置，能方便地测量机床主轴或刀具的空间运动位置。
With the more and more stringent safety requirements for high pressure vessels and nuclear energy equipment, the importance of LBB rule is increasing.
随着人们对高压容器特别是核能设备安全性要求的提高，先漏后爆准则的重要性不断增加。
With the more and more stringent safety requirements for high pressure vessels and nuclear energy equipment, the importance of LBB rule is increasing.
随着人们对高压容器特别是核能设备安全性要求的提高，先漏后爆准则的重要性不断增加。
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