旋绕层理;
Genesis of the ( Sluicing) Convolute Bedding in the Yellow River Delta
黄河三角洲(泄水)包卷层理的成因研究
Open platform facies metamorphic rocks are massive micritic bioclastic limestone and bioclastic limestone, with massive bedding, convolute bedding and graded bedding biological debris.
开阔台地相岩石类型主要为块状泥晶生屑灰岩和生屑灰岩,具块状层理、丘状层理和生物屑粒序层理。
Wheel-speed regulating change box Whether in the first case or in the second the center of the convolute bedding is commonly marked by a sand "ball" and sometimes there is one or a few sluicing holes in the center.
轮变速箱,砂轮变速箱无论是前者、还是后者,中心多为砂核,有时中心有一个或多个泄水孔。
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