“helper roll”的概念、定义、翻译、参考文献-科学参考

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单词	helper roll
释义	helper roll 辅助辊
随便看	bills discounted with collateral securities bills drawn under letter of credit bills due bill signed in acknowledgement of debt (IOU) bills of payment bills of sale bill sold on condition of repurchase bills-only policy bills payable bills payable account bill(s) receivable bills rediscounted bills retired bills sent for collection bills under letter of credit bills under letter of instruction bill to fall due bill to mature bill to order bill to purchase bill without credit billy billy goat bilobanone bilobate