砾石

The organisation wants to award a prize to cartoons on the theme "sand, pebble and gravel"(industrial materials, extraction and application).

该组织希望奖颁奖，以漫画的关于主题为&砂，卵石及砾石&。

The ZOOMLION KSD25 Dry-Wet Horizontally directional Drill is the first drill which drills through hard rock without a bentonite and mud pump. Its pneumatic percussive technology has not only solved the problem of mud pollution, but also has increased its efficiency 40% higher than a normal drill. Additionally, its cost is also much lower, and therefore, it has been considered as a most efficient solution for complicated stratum (including pebble and gravel, backfill and rock).

中联KSD25干湿两用水平定向钻孔机是我国第一台不使用膨润土和泥浆马达就能在硬岩中钻进并导向的钻机，其国际领先的气动冲击钻机技术不但不存在泥浆污染的问题，而且效率比普通钻机提高40％以上，成本也要低廉得多，被公认为目前对付复杂地层（包括卵砾石、回填土和岩石地层）最为有效的方法。2 s# C J， k5 _% C

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。

This pedestal rock began as a mass of pebbly sandstone.

这台座岩石开始是一块多砾石砂岩。

They build their nests,called redds, in the gravel in the shallow parts of streams.

它们在溪流浅水部分的砾石里搭建它们的巢，也就是&产卵区&。

Placers - There are two types of placers; rich placers which are groups of stones that are found in gravel, sand, river sediment, and valley floors, and loose weather resistant placers that are found in sand, clay, gravel, and rubble.

砂矿-有两种类型的砂矿；丰富的砂矿是群体的石头被发现在砾石，沙子，河流沉积物和谷地，气候和松散性砂矿被发现在沙子，泥土，碎石和瓦砾。

Placers - There are two types of placers; rich placers which are groups of stones that are found in gravel, sand, river sediment, and valley floors, and loose weather resistant placers that are found in sand, clay, gravel, and rubble.

砂矿-有两种类型的砂矿，这些都是是在砾石，沙子，河流泥沙石块组发现丰富的砂矿和谷地，气候和松散性砂矿被发现在沙子，泥土，碎石和瓦砾。

The loose placers are actually washed together in sands, clay, gravel and other various types of rubble, and those stones that have a high resistance to weathering end up in river beds or valley floors.

松散的砂矿实际上一起洗砂，粘土，砾石和其他各种类型的废墟，那些石头有高耐候最后在河床或谷地。

The loose placers are actually washed together in sands, clay, gravel and other various types of rubble, and those stones that have a high resistance to weathering end up in river beds or valley floors.

松散的砂矿实际上一起洗砂，粘土，砾石和其他各类瓦砾，那些石头有高耐候结束河床或谷底了。

The gravel surface with surface tarring which was chosen according to the available technological and financial possibilities, proved to be inadequate after only a few years and was completely restored in the years 1928 and 1929 using tar concrete in hot application.

砾石表面与地表tarring这是选择根据现有的技术和资金的可能性，证明是不够的后仅过了几年，已完全恢复的几年中， 1928年和1929年使用焦油混凝土在高温应用。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。