All the technical staff are trained up to a high level of efficiency.
受过训练的所有技术人员均具有高水平的工作效率。
Its advantages are high efficiency and safety, low cost and high mechanization level.
它具有效率高、安全卫生、机械化程度高、成本低的优点。
All the technical staff are trained up to a high level of efficiency.
所有的技术人员均经受训练而具有高水平的工作效率。
All the technical staff are trained up to a high level of efficiency.
所有的技术人员均经受训练而具有高水平的工作效率。
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