凹坑

It is the moderate size scallop on the stone that makes us feel consolatory. It will be filled with water when it rains.

稍稍能安慰我们的，是在那石上有一个不大不小的坑凹儿，雨天就盛满了水。

The diagnostic features for the species include deep excavation on the posteroventral margin of the premaxilla, a diastema between the premaxillary and maxillary teeth, a a number of many pits and ridges on the anterolateral surface of the antorbital fossa, the posterolateral process of the parietal being long and sharply posteriorly directed, the column ar -like margin of the pterygoid process of the quadrate, the bifurcated posterior margin of the dentary, a distinctive groove posterior to the anterior carina on the medial surface of the premaxillary tooth crowns, absence of ventrolateral processes on intercentrum of t he atlas, T-shaped centrum of the first caudal in ventral view, transverse process on anterior caudals with rounded , and strongly anteroposteriorly expanded distal end, presence of two fossae separated by an oblique ridge on the lateral side of the anterior chevrons near the articular end, and pubis strongly curved psoteriorly.

这一属种的主要鉴定特征包括：前上颌骨后腹缘有一深凹、前上颌齿和上颌齿之间有一齿缺、眶前窝外表面前部有许多坑窝和脊、顶骨侧后突伸向后方、方骨的翼骨支边缘柱状、靠近前上颌齿齿冠舌面前缘有槽、环椎间椎体外腹突缺失、第一尾椎椎体腹视 T 形、前部尾椎横突远端前后向强烈扩展呈圆形、前部脉弧近端外侧面有两个被一斜脊分离的窝以及耻骨强烈向后弯曲。通过分析千禧中国鸟龙的96个骨骼学特征，发现其中21个特征支持奔龙类与鸟类的亲缘关系最近，9个特征支持奔龙类与伤齿龙类亲缘关系最近，25个特征支持奔龙类、伤齿龙类和鸟类亲缘关系较为接近。

The trailer body adopts reinforced type mudsill and is suitable for transportation on rugged road. With three BPW axles, 11.00R20 tyre, WABCO ABS brake and the load capacity of 13000 kg, the trailer is an ideal and safety choice for medium distance road transport of asphalt.

车体采用加强型结构底梁，适合坑凹不平道路的行驶要求，车轴BPW 3轴，负荷13000 kg，轮胎11.00R20，刹车WABCO ABS，是公路中程沥青运输、安全理想的选择。

The trailer body adopts reinforced type mudsill and is suitable for transportation on rugged road. With two BPW axles, 11.00R20 tyre, WABCO ABS brake and the load capacity of 12000 kg~13000 kg, the trailer is an ideal and safety choice for medium distance road transport of asphalt.

车体采用加强型结构底梁，适合坑凹不平道路的行驶要求，车轴BPW 2轴，负荷12000 kg~13000 kg，轮胎11.00R20，刹车WABCO ABS，是公路中程沥青运输、安全理想的选择。

The trailer body adopts reinforced type mudsill and is suitable for transportation on rugged road. With two BPW axles, 11.00R20 tyre, WABCO ABS brake and the load capacity of 12000 kg~13000 kg, the trailer is an ideal choice for safety road transport of asphalt.

车体采用加强型结构底梁，适合坑凹不平道路的行驶要求，车轴BPW 2轴，负荷12000 kg~13000 kg，轮胎11.00R20，刹车WABCO ABS，是公路沥青运输、安全理想的选择。

The trailer body adopts reinforced type mudsill and is suitable for transportation on rugged road. With three BPW axles, 11.00R20 tyre, WABCO ABS brake and the load capacity of 13000 kg, the trailer is an ideal choice for safety road transport of asphalt.

车体采用加强型结构底梁，适合坑凹不平道路的行驶要求，车轴BPW 3轴，负荷13000 kg，轮胎11.00R20，刹车WABCO ABS，是公路沥青运输、安全理想的选择。

The surface cratered with the constant dropping of water.

表面因长年不断地滴水而成坑凹。

Heat sintered ZrO_2 ceramic does not react with any acids and bases except HF. It can't be coarsened by the traditional pretreatment process. Through a great deal of experiments, author found a kind of coarsened prescription which can corrode ZrO_2 ceramic, forming many holes and troughs on its surface.

高温烧结后的ZrO_2陶瓷的化学稳定性很高，除HF外不溶于任何酸碱，传统的粗化液对它没有粗化作用，笔者通过大量的实验，找到了ZrO_2陶瓷粗化液的配方，它能在ZrO_2表面腐蚀出大量均匀的微坑和凹槽。

And for the uneven surface which is concaved into the surface, the defected concrete should be removed by chisels to form the pits and grooves that are deep enough for backfilling and repairing .

凹入表面以下的不平整表面用凿子除掉缺陷的混凝土，形成供填充和修补用的足够深的坑、槽。

Failure: Pitting, cratering, or erosion of the surface. Obvious and significant deterioration.

失败：表面出现斑痕、坑凹或侵蚀，明显且重要的材料毁损。

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。