斯坦开动了链锯。
当你要找出一个从未使用链锯。
他们已经学会了如何使用链锯，以及如何管理林地。
They have learnt how to use a chain saw and how to manage the wood.
研究了锯链链轴材料及其热处理工艺。
Material and heat treatment process of chain pin were researched.
从而，实现了锯链生产的高质量和高效率。
Thus, to achieve a chain saw production of high-quality and high efficiency.
从而，实现了锯链生产的高质量和高效率。
Thus, to achieve a chain saw production of high-quality and high efficiency.
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