tightlock

词形变化

tightlocks 复数 tightlocks

释义与例句

n.
  1. 1.

    A form of Janney coupler, typically used on North American mainline passenger rail cars, having mechanical features that reduce slack in normal operation and prevent telescoping in derailments, yet remain compatible with other Janney types.

    定语

词源

From tight + lock.

来源：wiktionary