厚壁的

By changing the value of the blade thickness, cone angle, lead and height of fillet weld, influences of these parameters on the strength and displacement of the screw conveyor are investigated which form the base for optimization of the conveyor structure.

论文还通过调整螺旋输送器的叶片壁厚、半锥角、导程和焊角高等几何结构参数，研究了各参数的变化对螺旋输送器强度和变形的影响，为结构优化设计奠定了基础。

There exists a close relation between growth characteristics and wood properties of the provenance. The height and breast height diameter growth of the provenance had a positive correlation with tracheid diameter and annual ring width, and a negative correlation with tracheid wall thickness and wood density.

种源生长与材质性状间存在一定的相关关系，如种源的高径生长与管胞直径和年轮宽之间存在正相关，而与管胞壁厚和木材密度之间却存在一定程度的负相关。

This invention is advanced in technique, reasonable and simple, convenient to operation and needs a little time for auxiliary operation; fit to multiple times to-and-fro rolling to realize high extensibility and multiple standard wall thickness, increases produce efficiency, decreases cost and has good economic benefit and application value.

本发明工艺科学先进，合理简单，操作方便，辅助操作的时间短。可多次压下往复轧制，实现高延伸率，实现多种规格壁厚的产品轧制，提高生产效率，降低生产成本，具有很好的经济效益和应用价值。

Salicifolius; the columella is clear with few perforation in exine. Pollen characters do not support two sections below Stachyurus, but can be used as important characters in the species taxonomy. They also do not

此外，对旌节花科和Crossosomataceae花粉表面纹饰和外壁超微结构的研究结果提示：这两个科与省沽油科和山茶科厚皮香亚科有较近缘的关系，而不支持这两个科的姐妹群关系。

Leaf blades of current year pubescent or rusty scurfy; wall of cupule 2-4 mm thick

当年短柔毛或锈色的的叶片具鳞屑；壳斗2-4毫米厚的壁 31 Lithocarpus laetus 屏边柯

The influence of expanding-die diameter on the quality of finished products, such as the uniformity of deformation, the contour of a cross section and its ellipticity as well as the wall thickness of finished products, is discussed specially; a conception of relative radius of punch and the design criterion of it are given in this paper.

本文专门论述了机械扩径模具直径对成形品质的影响，提出了相对凸模半径的概念，系统分析了它对变形分布、成形件轮廓形状、椭圆度和壁厚的影响。

In this paper, Smith's finite difference solution of one-dimensional wave equation is applied to two prototype steel pipe testpiles 900 mm o.

本文将一维波动方程的史密斯差分解应用于华北渤海油田的两根开口打入的原型钢管试桩(外径900毫米，变壁厚、桩长分别为69及72米)。

In this paper, the deep drawing of TA0 titanium hemispherical part is studied by numerical simulation and experiment method.

以TA0薄壁半球形零件冷拉深成形为研究对象，采用数值模拟与试验研究相结合的手段，在研究该拉伸成形过程中零件的应变及壁厚分布规律及组织演变规律的基础上，对破裂、起皱缺陷位置进行了预测。

The ratio of internal diameter to wall thickness is critical if maximum spar effeciency is to be maintained.

的比例，内部直径，壁厚是至关重要的，如果最高SPAR公司的效率，就是要保持下去。

Based on the comparative experiment between the walls of the gaseous phase and the liquid phase,the analysis of the metallography organization and the scanning electric mirror as well as the energy spectrum,this thesis exactly evaluates the corrosive nature of monel metal in the low liquid phase and the top gaseous phase within the acid regeneration tower.

主要研究氢氟酸再生塔使用多年以后，根据气相和液相部位的壁厚对比试验，金相组织分析，扫描电镜分析以及能谱分析，评定了蒙乃尔合金在酸再生塔中低部液相部位和顶部气相部位的腐蚀性能。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷