substage meaning in Chinese
显微镜台台下的
显微镜台显微镜台下的
亚阶 亚期 分期 分台 镜台下部 镜台下部
亚期的
子阶段
Examples
- In actual practice a brighter image is obtained by using a broad, rather than a point, source along with a substage condenser .
在实际工作中，不是用点光源而是用一个扩展光源加一个台下聚光镜以得到一个较亮的象。 - The variations in trace element contents and ratios may hold up a mirror to the lake - level fluctuations and climatic changes , which , in turn , have exerted a direct and important effect on the sequence stratigraphic development . collectively , the reservoir rocks from the yanchang formation consist dominantly of the delta front subfacies subaqueous distributary channel and channel - mouth bar microfacies and delta plain subfacies subaerial distributary channel microfacies fine - grained feldspar sandstones and siltstones . the reservoir rocks have been subjected to three stages of diagenetic and porosity evolution : ( 1 ) the porosity reduction by the mechanical compaction and chemical pressure solution during the early diagenetic stage ; ( 2 ) the porosity increase by the dissolution during the a substage of the late diagenetic stage , and ( 3 ) the porosity reduction by the cementation and filling during the b substage of the late diagenetic stage
系统的储层特征研究表明，该区延长组储层成因类型主要为三角洲前缘水下分流河道、河口砂坝及三角洲平原水上分流河道微相细粒长石砂岩、粉砂岩；储层岩石经历了压实，胶结，溶蚀等成岩作用，历经早成岩机械压实和化学压溶孔隙缩小期、晚成岩a亚期溶蚀作用孔隙扩大期及晚成岩a亚期( b亚期)胶结充填孔隙缩小期三个成岩-孔隙演化阶段；储层物性总体上具有较低孔渗、低孔渗的特点，孔隙类型主要为粒间溶孔、残余粒间孔隙、粒内溶孔、晶间孔及晶间溶孔，裂缝不发育，储集岩排驱压力和中值压力较高，孔隙结构类型以细小孔-微孔隙，微细喉-微喉型为主。