指短期
债券，期限通常不超过两年，但各国具体用词各有不同。常用作
美国国库券(Treasury bills)的简称。
美国国库券亦简称T-bills，指一年或一年以内到期的
公债，到期前不付息。 Treasury notes及Treasury bonds为较长期的美国
公债，每半年按固定的
票面利率付息一次，到期
偿还本金。
Notes的年期为一年以上，10年以内，而bonds则是10年以上。其他国家在bills， notes及bonds的年期划分上可能各有不同。
A short-term
debt instrument with a
maturity usually no longer than two years, although terminology varies from country to country. Bill is often a shorthand reference to treasury bills, which are short-term government debt. Medium-term debt instruments are
notes and longer-term instruments are bonds. In some markets a note has a maturity of two to five years and a
bond has a maturity longer than five years, but usage varies.
