机械强度及安全性
Mechanical strength and safety
以上为机器翻译结果，长、整句建议使用 人工翻译 。
此外，也充分考虑了轴的机械强度及安全性，耐用性大大提高。
Besides, full consideration is taken into the shaft's mechanical strength and safety, thus its durability is improved substantially.
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