shelf n. (pl. shelves ) 1.搁架;搁料架;搁板。 2.沙洲;暗礁。 3.格;层。 4.【矿物】平层;锡沙矿基岩;【航海】承梁架[材];【地质学;地理学】(大)陆棚,大陆架〔又作 continental shelf〕。 5.搁板状物;突出的扁平岩石。 6.〔俚语〕(同伙中的)告密者。 off the shelf 1. 现货供应 (All of those parts can be purchased off the shelf. 所有这些零件都有现货供应)。 2. 〔俚语〕复活。 be on the shelf 1. 被搁置;束之高阁;无人问津的;废弃的;闲置的。 2. (因年老)而没有人雇用;(妇女无人过问)没有结婚的机会[希望];〔美俚〕退休的,退出体育界的。 3. 〔商业用语〕推迟的;(计画等)缓行的。 4. 〔古语〕在当铺内。 5. 〔盗贼俚〕被流放。 6. 〔俚语〕死了。
In the jurassic and cretaceous , generally it was also the shelf sea ( shallow sea ) , but there were lacustrine and lagoonal environments in different parts of the basin 侏罗纪白垩纪在总的浅海陆棚环境下,盆地不同地区也形成了湖泊和?湖环境。
In the late permian and triassic , the basin underwent once again a large - scale transgression , and the depositional environment was shelf sea with delta locally 晚二叠世三叠纪盆地又经历了一次大的海侵, ?浅海陆棚环境,局部?海陆过渡三角洲相。
These characteristics make it very clear that factors influencing the sea - atmospheric exchange of co2 in marginal continental shelf seas are very much complicated than those in open oceans 上述分布特征表明,陆架边缘海海一气二氧化碳交换的影响因素较大洋要复杂得多。