Based on the basic construction of platefin heat exchanger,put forward some reasons that the inside cave come into being.
基于铝制板式体的基本结构,提出了板式体真空钎接下凹形成原理,并在此基础上分析了影响板式体钎接下凹的因素:材料的影响、天气的影响、板式体外形的影响及钎接温度的影响。
For example,the river longitudinal profile is tending to be excessive concave shape,and the stability of river configuration is affected as well.
根据钱塘江富春江富阳河段近 1 0年的采砂情况和近 30年的河道实测资料分析 ,发现大规模和无序采砂使得河床严重变形 ,纵剖面形成过度下凹型形态 ,影响到河势稳定。
Buck Mulligan attacked the hollow beneath his underlip.
勃克·穆利根开始刮下唇底下凹陷的部位。
A slight depression or indentation in a surface.
凹痕表面上轻微的下陷或凹陷
Her cheeks fell in after the illness
病后，她的双颊凹下去了。
A gutter under the eaves of a roof.
水槽屋檐下的凹槽：
His eyes [cheeks] have sunk in.
他的眼睛[面颊] 凹下去了。
His eyes had sunk in.
他的眼睛凹下去了。
Her eyes have sunk in.
她的眼睛凹下去了。
Her eyes have sunk.
她的眼睛凹陷下去了。
There was slight pitting edema over both legs.
两下肢轻度凹陷性水肿。
The recess can be open to the top, with the integral blade subassembly being lowered into the recess, or the recess can open to the bottom, with the integral blade subassembly being raised into the recess.
凹穴开口向上时，整体的刀片组就下放入凹穴；凹穴开口向下时，整体的刀片组就往上塞入凹穴。
A split or indentation between two parts, as of the chin.
开裂，凹陷两部分间（如下巴）的裂隙或凹口
To form a small depression in(a surface).
在(某物体表面)留下轻微的凹痕
deep scores on the rock,eg made by a glacier
岩石上深深的凹痕（如冰川留下的）
An outline or indentation left by a foot on a surface.
脚印脚在表面上留下的轮廓或凹痕
How do you account for the dent in the car
你如何解释汽车车身上留下的凹痕呢?
0 - Raised\\;1 - Sunken\\;2 - Flat (Default)
-凸起\\;1-凹下\\;2-平面(默认值)
He was thin and his cheeks were hollow.
他很瘦,连面颊都凹陷了下去。
The shelf is yielding under the heavy books.
书架被厚重的书压得凹陷下去。
