gravel,pebble,rudus是什么意思

用法例句

Customize PDC bit to drill through long conglomerate interval;

PDC钻头厚层砾岩钻进技术探索与实践

Study on the favorable sedimentary facies belt of conglomerate reservoir by using grain-size analysis data;

利用粒度分析资料研究砾岩储层有利沉积相带

Visualization Study of Pore-level Displacement of Oil by Water in a Conglomerate Reservoir,;

砾岩油藏微观水驱油特征可视化研究——以克拉玛依砾岩油藏为例

Reserch on anti-cracking function of big-size gravel;

水泥稳定大粒径砾石的抗裂性能研究

Looks into in the way of the performance on the gravel flexible primary level asphalt pavement route;

砾石柔性基层沥青路面路用性能调查

Based on the water quality and climate of the oil contaminated lake in Daqing area,four simulated subsurface wetland systems were constructed in the field to study their removal effect of oil in lake water,including the gravel bed,the gravel-reed bed,the slag-reed bed and the slag bed.

针对大庆地区石油类化合物污染湖泊水质特点和气候条件,采用包含砾石床、砾石芦苇床、炉渣芦苇床和炉渣床单元的现场试验系统,考察启动期、投加微生物、投加缓释碳源、水温低于5℃和常规运行期等工况下各单元对石油类化合物的去除效果及其去除机理。

Important Factor of Boulder in Gold Placer Mining;

巨砾是砂金矿开采的重要因素

Study on the experiment of the gravel modifying the high liquid limit red clay;

砂砾改良高液限红黏土的试验研究

Through quality control of materials,mixing ratio design,proper mixing,correct compaction and curing,the cement-stabilized gravel cushion satisfies the design and application requirement.

通过原材料质量控制、配合比设计、恰当的拌合、正确的压实工艺和养生,水泥稳定砂砾基层满足了设计和使用要求。

In order to use high liquid limit red clay as embankment fill and aiming at the characteristics of easy crack and poor compactablity and water-stability,test study on gravel- improving method was carried out.

为合理利用高液限红粘土作路堤填料,针对其易开裂、可压实和水稳定性差等特点,开展了砂砾改良试验研究。