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1·The change of steel tube wall thickness during sinking is studied.

钢管空拉减径，伴随着管壁变化。

2·The said calculation formula is useful for accurate control of the final tube wall thickness tolerance.

该计算式对精确控制成品管壁厚精度具有实际意义。

3·For irregularly hot stress acting tube curve, it stressfully analyzes effect of body tube wall thickness difference.

对于不规则热应力作用下的身管弯曲重点分析了身管壁厚差的作用。

4·In order to retain ample strength at the welded seam, the tube wall thickness is increased making the overall frame heavier.

为了保留足够的实力在焊接缝，管壁厚度增加，使整体帧重。

5·The introduction of the concept of bellows wall thickness accuracy has the universal significance and reference value for manufacturing technology of other thin wall tube like products.

提出的管坯壁厚精度概念极其控制方法具有普遍性，对于其它薄壁筒形件的制造工艺具有参考作用。

6·Through appearance inspection, wall thickness measurement, EDS analysis and X-ray diffraction, the corrosion cause of the coal economizer tube is analysed.

通过外观检验、壁厚测量、扫描电镜、能谱和X射线衍射，对省煤器管腐蚀原因进行了分析。

7·The wall thickness of thick wall copper tube drawn without plug is calculated by using Zhou-Zhou formula.

本文用双周数表计算了铜合金厚壁管空拔后的壁厚。

8·The wall thickness of the tube will be increased with increasing back pressure or increasing friction coefficient.

管材弯曲内外侧壁厚随着反推压力的增大或摩擦系数的增大而增大。

9·Because rigid sintered microporous tube have certain wall thickness, and the deepness of pores can also have apparent filtering effect.

刚性烧结微孔管由于有一定的壁厚，毛细孔道的深层也可起明显的过滤作用。

10·Wall thickness of steel tube, concrete strength, shear-span ratio and axial force ratio were considered as test parameters.

试件参数包括钢管壁厚、混凝土强度、剪跨比和轴压比。