“信用证”的英语？

“信用证”的拼音为：xìn yòng zhèng...

银行开出了不可撤销的信用证[状].The bank has made out an irrevocable letter of credit.我想从这份信用证上提款100元.I'd like to draw 100 yuan against this letter of credit.我可以在这儿用这份信用证取钱 吗 ?May I draw money against the letter of credit here?...