... NC Normally Closed 正常关闭位 NCD No Computed Data 未计算数据 NCR NSS Communication Router 网络服务器系统的通讯路由器 ...
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未计算数据
Uncalculated data
以上为机器翻译结果，长、整句建议使用 人工翻译 。
基于大量计算数据，拟合得出整圈未焊透三通量纲一塑性极限内压工程估算公式。
Based on plenty of account data, engineering estimated formulas for plastic limit internal pressure were fitted for welded pipe branch junction with incomplete penetration along intersecting line.
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