钢丝绳在煤矿输送机构中作为牵引构件，其使用寿命直接影响到煤矿生产的成本及安全。
Steel rope is a hauling component in conveying mechanism in coal mines. Its service life directly relates to production cost and safety in coal mines.
车衡是殷周车子上重要的构件，被作为车子上主要牵引受力部位，发挥着重要的作用。
The Heng was an important component at the chariot in Shang dynasty, and regarded as its drawing and receiving position mainly and played an important role.
铁路固定装置。电气牵引电缆用嵌入钢筋混凝内的密排导管。直管构件。
Fixed railway installations. compact ducting in reinforced concrete for electric traction cables. straight units.
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