查询词典 gravels

It was indicated that mulching with the gravels 1.5-2 cm in size and 5 cm in thickness was an effective and economical technology for the ecological rehabilitation of river flinty slope.

厚5cm、粒径为1.5~2cm的碎石覆盖技术是硬质护坡生态修复中一种经济有效的技术方法。

Soil and climate: Situated on the Left Bank of the Gironde estuary, it has Gravels and Clayey-limestone soil.

土壤和气候：吉隆特河口左岸，沙砾石和石灰石粘土。

For a single structure, use concrete from same placing site, made of sands and gravels of the same specification and nature.

同一结构部位尽量采用同一料场的同规格、同性质的砂子或碎石。

The use of small gravels or coarse sand to adjust the required roughness will reduce the effective cross-sectional area and raise the water surface elevation in the model.

由於过水断面面积的減少而引起的影响，是难於估計的。在本文中，介紹了不按照夫劳特定律設計的河工模型。

Joesting has used the magnetometer to locate gold in Alaska, taking advantage of the close association of gold and magnetite in gravels

乔斯丁利用砾石中金子与磁铁矿密切的共生关系，曾经用磁力仪在阿拉斯加寻找金矿。

In order to analysis the paleo-current effectively on the conglomerate, I proposed a method that can be carried out by orthogonal photo in field and statistic analysis at room. It has been improved to be efficient and veracity, especially for the case that the states of gravels can not be measured directly.

为了更有效的分析古流向，对砾岩发育地层，提出了野外正射投影照相—室内统计计算的方法，该方法能提高工作效率及分析准确性，尤其适用于野外不易直接测量产状的细砾岩层。

The paper articulates the drilling fluids techniques employed for drilling huge gravels, large gypsums in deep wells, long shales, high pressure brines under high bottomhole temperature in extreme deep wells. This paper also discusses how to determine mud density for the fourth spudding, how to optimize mud addi...

详细介绍了该井大井眼巨厚砾石层、深井段巨厚盐膏层、第三系大段泥岩井段、高压盐水层及超深井高温条件下的钻井液工艺技术并对四开钻井液密度的确定、钻井液处理剂的优选和五开井段钻井液粘切的要求进行了探讨。

This photo shows the end of the Muztag Glacier. Moraines are on the right of the glacier, with a small glacial lake beyond it. Submerged glacial gravels can be seen clearly.

该照片反映的是木孜塔格冰川的末端，冰川右侧为冰碛物，前下方为小型的冰川湖，冰川沉砾清晰可见。

The ice-wedge developed in the prior moraines and the black fine gravels by glacial ablation accumulated on the periglacial zone.

末次冰期时长坪沟口属于冰缘地带，在前次冰期冰碛物上发育了冰楔构造，冰缘地带冰川融水形成黑色细砾堆积。

The main target coal seam of Xieqiao Mine is directly covered with the Quaternary bottom gravels, whose impermeability affects the reasonable retainment of waterproof pillar .

第四纪底砾层直接覆盖在谢桥煤矿煤系地层之上，其隔水性能影响到防水煤柱的合理留设。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。