查询词典 sand blast apparatus

By the field survey which lasting a period of 3 grown seasons and by the means of remote sense and geographic information system, we ascertain the present vegetation pattern of Hunshan-Dake sand land, find out vegetation distribution principles on the different scales in the same time . From west to east, with the increasing of dry degree, the type of plant community changed form the xeric to the mesic. The vegetation of Sand land shows the characteristic of the zonal vegetation, but dont consistent with the traditional diversification principle. The vegetation of the middle part displays a high differential characteristic, which compresses the longitudinal zonation at a certain extent. So we can say that sand land vegetation is semi-zonal.

通过对浑善达克沙地历时三个生长季的地面考察并应用遥感及地理信息系统等手段，确定了浑善达克沙地植被分布现状及浑善达克沙地植被在不同尺度下的分异规律：由西向东，沙地植被随着干燥度的降低，由旱生群落为主的区段递变为以中生群落为主的区段，表现出具有一定的地带性植被特征，但与传统的地带性植被的递变规律不相一致，沙地中段的植被表现出了高度的特异性，在一定程度上压缩了植被的经向地带性，表现出沙地特有的地带性分布规律，所以认为沙地植被是一种半地带性植被。

The medium-grained sandstones and medium-fine-grained sandstones form good reservoirs and the poststones medium reservoirs, while siltstones form poor reservoirs and pelitic siltstones poorest reservoirs. Sand bodies mostly develop in sand-flats, tidal channels and distributary channels of braided stream delta microfacies. The reservoir rocks of sand-flat and tidal channel are best with the physical property. Diagenesis such as compaction, cementation and dissolution has strongly reformed the reservoir rocks and the late dissolution has greatly improved their porosity and permeability.

中粒砂岩、中细粒砂岩属好储层，细粒砂岩属中等储层，粉细砂岩，粉砂岩属较差储层，而泥质粉砂岩则属差储层；砂坪、潮道和辫状河三角洲分流河道微相中的砂体最发育，它们决定了储集岩的发育、分布及原始物性条件；砂坪和潮道储集岩的物性最好，辫状河三角洲分流河道储集岩的物性次之，砂泥混合坪、辫状河三角洲分流河道间储集岩的物性较差；成岩作用对本区CⅠ油组的储层有强烈的改造作用，尤其是较晚期的溶蚀作用对岩石的储集性能有明显的改善，对本区CⅠ油组中孔高渗透储层的形成有很大的贡献。

Turntable automatically play a sand machine, automatically direct a sand-belt machine, one Taiwan, three hand Penda noisy machines, as do non-stick paint a sand before processing.

自动转盘式打砂机一台，自动直带式打砂机一台，手喷打吵机三台，可为不粘漆做打砂前处理。

The tidal sand ridges in the East China Sea and the sand ridges in the Celtic Sea are all large-scale and deep water sand ridegs on open continental shelf, and were formed in the postglacial sea level rise period.

东海潮流沙脊与凯尔特海沙脊均为开阔陆架上的大型深水沙脊，它们都形成在冰后期海面上升时期。

The aim of this research is to understand the ecological relationship between sand vegetation and environment, adaption charactristics of psammophilous plants to sandy environment and feature of plant resources in Otindag Sand Land, and further to provide theory evidence for selection optimal sand-fixation species and planning feasible process of vegetation restoration in desertification control.

本论文的目的是了解沙地植被与环境的生态关系、沙生植物适应沙地环境的特点以及沙地植物资源特征，为在沙漠化防治中选择合适的治沙物种、制定合理的植被恢复方案提供理论依据。

Caragana intermedia is a psammophilous shrub and one of the commonly occurred species in fixed and semi-fixed sand dunes in Otindag Sand Land and MU US Sand Land.

中间锦鸡儿是浑善达克沙地和毛乌素沙地固定和半固定沙丘上常见的一种沙生灌木。

The decreased threshold shear velocity and unsaturated sand flows at the stoss slope of the dunes resulted the erosion at the toe of the dune. Under the medium and low drifting-sand winds the sands being transported have divergence with that on the surface, the mean grain size of transported sands is lower than that on the surface and the sand transporting is a stochastic process.

起动剪切速度减小与不饱和风沙流是沙物质在横向沙丘迎风坡坡脚不能产生沉积的主要原因；再者，平均风速并不能完全反映野外实际状态下气流的性质，在低－中强度的风沙活动过程中，被输送的沙物质的粒度组成与下垫面物质有明显的差异。

The majority of the observed abnormal casing pressures can be related to the Siph 110 sand, which is an undepleted sand about 1200 feet above the Siph 120 sand, typically in the 7" or 9" casing interval.

观察到的异常套管压力可能与大多数的Siph110砂，大约是1200以上Siph120沙子，脚一undepleted沙子一般在7&或9&套管间隔。

On sand packs consisting of 100 cm~3 quartz of particle size 0.3—0.6 mm, 2 mL kerosene, 1 mL produced water and several drops of isopropyl alcohol, the formulation of LFAR sand consolidation fluid is studied on the basis of the experimental data of compression strength and permeability of the consolidated sand packs and established as follows: 5.0 g LFAR; 0.5 g paratoluene sulfonic acid as curing agent; 5.0 g butyl acet...

在由100cm3粒径0.3～0.6mm的石英砂、2mL煤油、1mL油田污水、几滴异丙醇组成的固砂模型上，根据固结砂的抗压强度和渗透率筛选出了糠醇聚合物固砂剂各组分的用量：糠醇聚合物5g，固化剂对甲苯磺酸0.5g，稀释剂醋酸丁酯5g，后固化剂NaCl+HCl溶液100mL，预冲洗液80mL，后冲洗液80mL。

Bury one's head in the sand→ head-in-sand:"Don't be so foolish as to adopt a head-in-sand attitude."

作者： 狗狗小白和他的心 2005年12月16日，星期五 13：25 回复（0）|引用（0）加入博采

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。