下凹

下凹型压料面对冲压成形影响的有限元仿真研究当pH值回升曲线为下凹型时，菌系的分解活性较高，反之，出现上凹型曲线，则活性受到抑制；

Research on Finite Element Analysis of Concave Blank-Hold Surface in Stamping Process When pH value curve are concave to the downside the fermentation activity of microbial mixture are higher , on the contrary , if the curve was concave to the upside the activity was restrained .

地势北低南高，中部下凹。

Low-lying north south high , the central concave .

P′波的中部下凹，此凹在C1横断后消失；

In the middle of wave P ' there was a valley , which disappeared after Cl transection .

依据量纲分析理论，对水翅现象的影响因素进行了分析，可知水翅现象与泄洪洞有压段出口Fr0、水流对冲长度Ld和水面下凹深度H（cs）有关。

The works included : ( 1 ) Based on dimensional analysis , the influencing factors of the height and length of the water-wings were obtained .

非均匀集体流理论可以解释AGS能区的末态粒子最新的分布特征，尤其是解释了困扰实验和理论物理学家多年的快度中心分布下凹现象。

Especially , it can explain the gap of central rapidity phenomenon distribution that puzzled physicists for many years .

以不同力量撞击10只山羊一侧下颌角部，方向平行于下颌角&颞下凹中点连线，间接造成TMJ损伤。

Indirect trauma of the goat temporomandibular joint ( TMJ ) was created by the impact to the mandibular angle with different strength of force , applied from an angle glenoid direction .

中颅凹&颞下凹原发肿瘤的外科治疗

Surgery for the primary tumor of the infratemporal fossa-middle cranial fossa

多数存在长形下凹者为单根管。

Most mandibular incisors with long concavity had single root canal .

步冲机下凹模开裂分析

Failure analysis on cavity die of step - cutting machine

下凹式绿地运行效率的概率分析及其应用

Application of Probability Analysis Method of Operation Efficiency of Low Elevation Greenbelt

下凹式绿地和蓄水池对城市型洪水的影响

Impacts of sunken lawn and storage pond on urban flood

下凹式绿地对城市降雨径流污染的削减效应

Reduction effect of sunken green space on urban rainfall-runoff pollution

城市下凹式绿地长期运行蓄渗效率的概率分析

Probability Analysis of Storage-infiltration Efficiency of Urban Concave-down Greenbelt Under Long-term Operation Conditions

下凹式草坪耗水量试验研究

Study on the Water Consumption of Sunken - lawn

参观者进入广东省博物馆要通过中央草坪上一条石头铺成的下凹道路。

Visitors enter the Guangdong Musuem through a stone-paved depression on its central lawn .

铝制板翅式换热器真空钎接下凹原因探讨

Analysis of Inside Cave on Plate-Fin Heat Exchange in The Course of Vacuum Brazing

车轮踏面下凹磨耗危害大应旋修

Harmful Concave Worn Wheel Tread Needing Turning

结果研究区生态系统服务功能价值呈下凹曲线变化趋势。

Results The trend of evolution of the value of ecosystem services was a sunken curve .

下倾、拱形、下凹的背部；平或过于陡峭的臀部均为缺陷。

Sloping backline , roach or sway back , flat or steep croup to be faulted .

供电系统的电压下凹

Voltage dip in power supply network

而侧阻力峰值之后的部分为粘结段，呈下凹衰减曲线。

After the peak point , there is a gluing segment which presents a sunken shear curve .

基于微正则分析方法，在吸附转变区域体系的熵出现下凹的特征。

Based on the microcanonical analysis , the microcanonical entropy in the adsorption transition shows convex features .

目的研究颞下凹区神经内分泌癌的正确诊断及治疗。

Objective To study the neuroendocrine carcinoma of infratemporal space and improve the diagnosis and the therapeutic effect .

上凸和下凹特征随时间出现振荡，这明显不同于均匀下垫面的情形。

Convex and concave features oscillate over time . This is obviously different from the case of homogeneous surface .

黄河下游河流下凹型纵剖面成因分析

A Note on the Contributing Factors of the Concave Longitudinal Profile of the Channel in the Lower Yellow River

下凹式绿地是一种生态型的雨水渗透设施，目前还没有相关设计规范。

Low elevation greenbelt is an ecological facility of rainwater infiltration , but its design method is not standardized .

通过试验测试了下凹式草坪雨水利用以及节约灌溉水量方面的影响因素和效果。

This paper studied the effects and influence factors of storing and infiltrating and water saving by field test .

方法对2例原发于颞下凹区的神经内分泌癌进行临床分析和总结，对标本行免疫组化染色。

Methods 2 cases of the neuroendocrine carcinoma of infratemporal space were analyzed and the samples were stained by immunohistochemistry .

下凹的导槽在底板背面形成加强筋，底板不易变形；

The sunken guide-slot forms rib reinforcement at the backside of the base-plate and the base-plate is hard to deform .

旁路节流调速实验曲线下凹的原因分析

An analysis of the cause from which the experimental curve of the bypass flow control circuit has a sudden fall