砾石

Desert pavement commonly occurs on the three soil site surfaces, which is composed of pebbles and fragments formed slowly in typical desert zone. Many pebbles are subround and variegated.

土壤学特征：1三个土壤地点的地表都有一层砾石层平铺在土壤的表面，称之为漠境砾幂。

The Yumen Conglomerate lies unconformably on the Niugetao member and the Jiuquan Gravel lies unconformably on the Yumen Conglomerate as well.

对全剖面进行了2～5米间隔的古地磁样品采集，另外还在玉门砾岩和酒泉砾石层中采集了19个电子自旋共振年代样品。

Yet John Underhill of Edinburgh University has found evidence that the isthmus is full of landslide rubble, which could have tumbled into a narrow sea channel during an earthquake.

然而，爱丁堡大学的约翰安德希尔发现证据显示这个地峡布满了山崩后的砾石，它们可以在发生地震时滚落到一个狭窄的海峡里。

According to the Th-Hf-Ta discriminati on diagram,the protoliths of the eclogite gravels are characterized by volcan ic arc basalts.

在 Th- Hf- Ta判别图上，榴辉岩砾石原岩属于火山弧玄武岩。

In order to elucidate the effect of the texture, structure and particle size of aggregate on determining its ASR reactivity, the texture, structure and ASR features of zeolitic pearlite and siliceous gravel were examined by optical microscope, XRD and SEM/EDS.

本文第一部分充分结合压蒸法和快速砂浆棒法的优点，以沸石化珍珠岩和江苏硅质砾石为集料对比研究了胶砂比和集料级配对砂浆试体在80℃10％KOH溶液中ASR膨胀的影响。

The effect of C/A and aggregate grading on ASR expansion were evaluated by measuring the expansion of mortar bars with various graded zeolitic perlite and siliceous gravel immersed in 10% KOH solution at 80℃ respectively.

本文第一部分充分结合压蒸法和快速砂浆棒法的优点，以沸石化珍珠岩和江苏硅质砾石为集料对比研究了胶砂比和集料级配对砂浆试体在80℃10％KOH溶液中ASR膨胀的影响。

The suppressing effect of BJ fly ash on ASR expansion of siliceous gravel, zeolitic perlite and silica glass in 1M NaOH solution were studied at 40℃, 60℃ and 80℃ respectively. It is indicted that the suppressing effect of one certain fly ash on ASR expansion various with temperature and the reactivity of aggregate.

通过BJ粉煤灰在40℃、60℃、80℃的1M NaOH溶液中对硅质砾石、沸石化珍珠岩和石英玻璃ASR膨胀抑制效果的研究，发现同种粉煤灰在不同温度下对ASR膨胀抑制效果随温度和集料种类而异。

The ASR features of mortars with siliceous gravel. zeolitic perlite and silica glass storage at various conditions were examined by SEM/EDS. It was found that ASR had taken place seriously even with high replacement of cement by PFA.

采用SEM／EDS研究了石英玻璃、硅质砾石和沸石化珍珠岩在不同养护条件下ASR特征，发现掺加粉煤灰，甚至大量粉煤灰后，集料仍发生了的反应，有时反应还很严重。

The inhibiting effect of aluminous compounds including on alkali-silica reaction in gravel and zeolitization perlite mortars were investigated. The aluminous compounds content, the alkali reactivity of the aggregate and the alkali content will affect the inhibiting effect.

研究了Al3、α-Al2O3等不同的含铝化合物对砾石、沸石化珍珠岩2种集料碱硅酸反应膨胀的抑制作用，讨论了掺量、集料碱活性、碱含量对含铝化合物抑制碱硅酸反应（alkali silica reaction， ASR）效果的影响。

In order to investigate the compound constructed wetland role on the agricultural waster water purification, we built the biological filter with macrophyte of Zizania caduuciflora and bulrush, gravel and sand as their substrates.

研究了茭草、芦苇两种植物，砾石层、粗砂层、细砂层为基质的生物滤池和木炭吸附池构成的复合人工湿地装置净化溶岩地区农田排水中氨氮、总氮和总磷的去除效果。

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。