The results show that the mineral comparative maturity of sandstones increases with the distance from the fan-delta plain to the fan-delta front;
分析表明：从扇三角洲平原到扇三角洲前缘，矿物成分成熟度呈现递增的趋势，河口坝微相的长石砂岩最为发育；
Other variations of the plain vanilla bonds include zero coupon bonds which does not pay out interest but interest accrues and is paid in a lump sum at maturity.
其他特殊种类债券还包括“无息债券”，它在有效期内不付利息，而是累积起来在到期时一次偿还。
Prior to the early 1980s, the bond market was comprised mainly of 'plain vanilla' bonds with simple cashflow structures, where coupon payments and maturity were fixed at the outset.
在80年代以前，债券一般上都相当简单，即包括不太复杂的现金流动结构，票面利率和到期日在发行时已定下。
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