查询词典 blank wall

In addition, the blank holding force that is required to avoid wrinkle and rupture during conical part deep drawing is researched. The necessity of reasonable blank holding force in pressing is expounded. From the view of mechanical analysis, the wrinkle critical condition of side-wall is derived for the first time by the stress state of side-wall, the main deformation region on blank. According to the critical condition of plastic instability for flange, side--wall, corner of punch on blank, The blank holding force in conical part deep drawing is divided into four different regions within its forming figure. The basic principle of reasonable blank holding force during stamping is summarized and provided. The mathematical model of reasonable blank holding force that avoids the wrinkle and rupture is established and verified by the finite element numerical simulation and the grid experiment method. The result shows that it is accurate and reliable.

此外，本文还研究了圆锥形件拉深成形过程中，随着拉深变形过程的进行，毛坯为避免产生起皱、破坏缺陷而对压边力的需求情况，阐明了圆锥形件拉深成形过程中压边力合理变化的必要性；由毛坯主要变形区悬空锥壁部分的受力变形情况，从力学分析的角度，首次推导得出了圆锥形零件悬空锥壁起皱失稳的临界条件；并根据主要变形区法兰、悬空锥壁及凸模圆角部分的塑性失稳临界条件，在其成形范围图中，将圆锥形件成形过程中的压边力划分为四个区域；总结并提出了圆锥形件成形过程中压边力合理变化的基本原则；建立了防止起皱、破坏缺陷产生的压边力合理变化的数学模式，并得到了有限元数值模拟及网格实验法的验证，证实了理论分析结果的正确性和可靠性。

Faced with the blank wall of collective embarrassment, Cidalia won't keep quiet.

面对由窘境聚集而成的无形墙，Cidalia不愿保持沉默。

He speaks in low tones, unconsciously looking over his shoulder now and then at the blank wall of my room.

他说话时声音很低，常常下意识地掉过脸去偷看一下空空如也的墙壁。

Inside Michael's apartment he looks over a massive blank wall.

在 Michael 的公寓里，他扫视了一下面前这块空阔的空白墙壁。

The long road from Atlanta to Tara had ended, ended in a blank wall, the road that was to end in Ellen's arms.

从亚特兰大到塔拉，这漫长的道路算是结束了，在一堵空白的墙上结束了，它本来是要在爱伦怀抱中结束的！

It faced a blank wall.

它面临著一个空白墙。

Areas of high contrast need a greater number of smaller samples, whereas say large areas of blank wall can have fewer, larger cells.

高对比区域需要大量的较小采样，而大面积空白的墙面可以为较少且较大的单元格。

It faced a blank wall.

窗户正对着一堵墙。

It faced a blank wall .

窗外是一堵光秃秃的墙。

Would you enjoy gazing at a blank wall or reading railway bye-laws while waiting for a train?

当你等候列车的时候，只能直愣愣地对着一面白墙，或者只能阅读铁路运输细则，你会喜欢吗？

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。