查询词典 gravel

Sedimentary facies model for mixed sediments of recent reefoid carbonates and siliciclastics is developed from the facies model of fringing and barrier reefs. Based on the sedimentary facies and textures, mixed sediments may be subdivided into 5 types as follows: 1 reef base mixed sedimentary rocks and reef framework mixed sedimentary rocks; 2 reef flat sand-gravel mixed sedimentary rocks; 3 backreef beach-dune gravel-sand mixed sediments; 4 backreef lagoonal sand mixed sediments ; and 5 reef front littoral sand mixed sediments.

礁源与陆源混合沉积相模式是从岸礁一堡礁相模式基础上发展而来，根据其沉积相和沉积结构特徵可以分为5种混合沉积：①礁基混积岩和礁格架混积岩；②礁坪砂砾屑混积岩；③礁后海滩－沙提砾砂屑混合沉积；④礁后泻湖砂屑混合沉积；⑤礁前浅海砂屑混合沉积。

On the Basis of lots of experiments and studies about using natural sandy gravel and mixture, application of natural sandy gravel to expressway pavement subbase is analysed with examples in project.

通过对天然砂砾土及其混合料的试验研究，结合工程实例，分析了天然砂砾土在高速公路路面底基层中的成功应用，阐述了一种合理利用当地自然资源的新途

This paper studied on domestication of plantlets in tissue culture and rapid propagation of Dendrobium loddigesii Rolfe which dealed with the different medium composed of gravel, rotten soil, perlite, turves, sawdust and china clay, in the different light intensity and temperature. The results showed that the best selection of medium on the domestication was 10cm gravel in bottom, rotten soil + sawdust + perlite,(5:1:1) in the middle part ,5cm greenness bryophyte on the surface.the best selection of medium on the transplantaion of plantlets in vitro of bramble,and light intensity was employed harf overshadow by adumbral net,temperature confined 14℃－28℃.

本文研究了环草石斛组培苗炼苗的影响因素如光照强度，温度以及基质等，初步获得环草石斛组培苗炼苗生产技术：能进行人工光、温、水控制的如塑料薄膜大棚内进行环草石斛组培苗炼苗，光照强度的要求是使用遮阳网半遮阴；温度控制在14℃－28℃；出瓶苗要求株高2～5cm，叶片4～7，根数3～8；组培苗炼苗基质为底层是约10cm厚的碎石，在碎石上面是腐殖土+锯末+珍珠岩(5：1：1)，最上面是一层5cm厚的新鲜苔藓。

It works by choosing appropriate gravel, scree, talus decries, coarse sand, medium sand, then ram them to be closely knitted. The sand gravel cushion can increase the bearing capacity of weak groundwork.

这种垫层法是用碎石、卵石、角砾、圆砾、砾砂、粗砂、中砂或石屑等坚硬、较粗粒径的回填材料，经合理级配并夯压密实后形成持力垫层，其主要目的是为了提高浅层软弱地基或不均匀地基的承载力。

Based on the ponding loading test of Gannan 330kv transformer substation s foundation,the collapsible mechanics of gravel soil is analyzed by the structure theory of soil s collapsible deformation and the main factors of gravel soil s collapsible distortion.

主要以甘南330 kV变电所碎石土地基的现场浸水载荷试验和室内实验为基础，根据湿陷变形的特征，分析了影响碎石土地基湿陷变形的主要影响因素，探讨了碎石土地基的湿陷机理。

While the gravel layer is thick, the occurrence and development of the boiling of sand correspond to the model of hemispheric bottom hole which cheek by jaw with upper clay band; While the gravel layer is relatively thin, the occurrence and development of the boiling of sand correspond to completely penetrating well model.

本文在分析总结前人对渗透理论和渗透变形以及渗漏探测方法的基础上提出了渗透变形的理论模型和渗漏探测的平面热源法，并将环境同位素和水文地球化学方法应用于堤坝基的渗漏分析评价。

While the gravel layer is thick, the occurrence and development of the boiling of sand correspond to the model of hemispheric bottom hole which cheek by jaw with upper clay band; While the gravel layer is relatively thin, the occurrence and development of the boiling of sand correspond to completely penetrating well model.

当砂砾石层较厚时，涌砂的发生、发展符合紧靠上覆粘性土层的半球形井底模型；当砂砾石层相对较薄时，涌砂的发生、发展过程符合完整井模型。

"In sluicing, a slightly sloping wooden trough called a box sluice, or a ditch cut in hard gravel or rock called a ground sluice, is used as a channel along which gold-bearing gravel is carried by a stream of water."

泄水时，使用叫做箱式溜槽的稍倾斜的木制水槽，或是叫做表溜槽的坚硬砂砾或岩石上的沟口，作为携带黄金的砂砾被水流带走的信道。

In the analysis, macroscopic continuous supposition of the traditional continuous medium model is overcome; it is studied and compared the change in the displacement field of the shope during slip before and after being strengthened by the gravel piles, as well as the effects of different pile diameter, space and length of the gravel piles.

该方法克服了传统的连续介质力学模型的宏观连续性假设，对比研究了碎石桩加固前后的土坡在滑动时位移场的变化，以及不同桩径、不同间距、不同桩长对土坡的加固效果。

Different fillers for wetlands are chosen by comparison and then matched, the following filler matching is achieved aiming at different influent: for wastewater with low nitrogen concentration and medium or high organic matter concentration, better removal efficiency is attained by combined fillers of coal cinder + pebble stone + gravel; for wastewater with high nitrogen concentration and low organic matter concentration, the optimum combination is fly ash brick crumbs + gravel.

针对不同的进水进行了湿地填料的比选与配伍，获得了适合于不同水质的填料配伍：对于含氮浓度低或中、高有机物浓度的污水，煤渣+砾石+碎石填料组合有较好的去除效果；对于含氮浓度高或有机物浓度低的污水，粉煤灰砖屑+碎石组合有较好的去除效果。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。