“manual block”的概念、定义、翻译、参考文献-科学参考

单词	manual block
释义	manual block Encyclopedia 工学铁路区间闭塞释 manual block人工闭塞人工确认相邻两铁路车站间区间线路空闲、办理和解除闭塞，且在值班员与司机间人工交接行车凭证的闭塞方式。
随便看	separation theorem separatist regime in the middle and late Tang Dynasty Separatists separative separative element separative family separative number separative partially ordered set separative semigroup separative work separativity condition separatography separator separator between sets separator for heavy-ion reaction products separator of a category separator sampling separatory funnel separatrice separatrix separatrix cone separatrix contour separatrix cycle separatrix diagram separatrix manifold

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