具有效率高、成本低的优点。
It has the features of high efficient and low advantage in cost.
它具有效率高、安全卫生、机械化程度高、成本低的优点。
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。
Its advantages are high efficiency and safety, low cost and high mechanization level.
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