查询词典 gravel road

The stroke reverse circulation drilling machine of CZF2000-1800 type is produced by our company newly to adapt to the demand of percussion drill market due to the development of road and bridge industry, it is specializedly used for pore forming of pebble and gravel stratum and hard stratum.

1800型冲击反循环钻机是我公司最新研制生产的为适应我国路桥事业发展对冲击钻机市场的需求，专门用于卵砾石地层、坚硬地层中成孔的钻机。

Its value is in its ability to act as a guard from road hazards such as bugs, chemicals such as tar and gravel on roadways and from pitting damage on your automobile's grill and paint surfaces.

它的价值是它有能力充当警卫从公路灾害等昆虫诸如化学、焦油及沙石公路从汽车蚀损坏你的油烟和油漆表面。

These attributes can be further divided into classes such as tree species Douglas-fir and ponderosa pine for forest types and paved and gravel for road types.

这些物件可以进一步分类，例如森林种类中的树种以及道路类型中的柏油路和沙砾路。

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。