内壁

So the thickness of transporting metal piece should be raised up. If we choose copper as electricity transporting piece which has a low melting point, it is easy for melt copper to flow to inside tube.

在石墨管处使用低熔点的导电片铜时，熔融的铜易向石墨管内壁流动，将引起电流的持续下降，此处必须使用高熔点的金属如钼片予以隔绝。

By calculating, we can see that the first thick-walled cylinder in the wall to reach the plastic, and then a gradual outward expansion of plastic zone, which can be practical for engineering design, production and application of the provision of meaningful reference value.

通过计算可知，厚壁圆筒在内壁最先达到塑性，而后塑性区逐渐向外扩展，这可为工程实际中的设计，生产和应用提供有意义的参考价值。

Between the guide element (15) and the inner wall of the suction pipe (13) there remains a space for transit of the tubular article.

在导向构件(15)与抽吸导管(13)的内壁之间，遗留下一个供管状物品通过的间隙。

Through studying mechanism of drilling string failure in the action of interaction of cyclicstresses and corrosion, we find fracture source is accord with pitting corrosion inside surface ofdrilling string, crack from pitting corrosion lead to drilling string failure, the process of drillingstring failure is new drilling string → corrosion pit forming and crack initiation → corrosionfatigue crack propagation→piercement or fracture.

通过研究在钻柱交变应力和腐蚀的交互作用下的机理发现，腐蚀疲劳裂纹源与钻杆内壁蚀坑对应，蚀坑萌生裂纹造成钻柱失效，钻柱腐蚀疲劳破坏过程归结为：新钻杆—蚀坑形成及裂纹萌生—裂纹扩展—刺穿和断裂。

MARK THE CORRECT GAP SIZE BETWEEN STERN TUBE AND STERN FRAME BOSS ON THE LEFT SIDE OF THE CHART AND DRAW A HORIZONTAL LINE.

5.6-2 根据实际情况在纵轴线上标出艉管与外支撑套内壁之间的间隙值标出点并以此点作一根水平线

The methods of using ARC macromolecular composite materials to repair the steam piping and crude surface of pumps leaves and pumps case are introduced.

文章介绍水泵叶片、泵壳内壁汽蚀麻面采用ARC高分子复合材料修复的方法和效果。

Experiments of steam - water two - phase flow frictional pressure drop through five vertically and horizontally positioned belieal coils were carried out in the high pressure steam water test loop of Xi an Jiaotong University.

在压力p＝4－14MPa，质量流密度G＝400－2000kg／m2·s，内壁热流密度q＝0－750kw／m2的参数范围内，进行了螺旋管内高压汽水两相流动磨擦阻力的试验研究。

In addition to valve fully open position, the valve flap valve components and the gap between the inner wall of not less than for the cast iron 1 9mm, for the non-ferrous metal or stainless A44C Type Pound-Grade Full Lift Spring Loaded Safety Valve steel of not less than 9mm (not including brake locks and locking institutions).

除阀全开位置外，阀瓣组件与阀体内壁之间的间隙对于铸铁不应小于1 9mm，对于有色金属或不锈钢不应小于9mm(不包括制动锁和锁止机构)。

On the basis of structural features and heat transfer characteristics of a spiral-grooved tube heat exchanger,a three-dimensional geometric model was established for the flow and heat transfer in a heat exchanger with water serving as its working medium.

根据螺旋槽管换热器结构特点及传热特性，建立了以水为工质的换热器流动与传热的三维几何模型。运用有限元分析软件ANSYS模拟出换热器在换热过程中速度场与温度场的状况，分别得到了螺旋槽管内壁与外壁的对流换热系数。

Running, the screw pump cylinder outer surface and inner wall formed between the layer of oil film prevents direct contact between the metal, so screw tooth wear significantly reduced.

在运行中，螺杆外圆表面和泵缸内壁之间形成的一层油膜，可防止金属之间的直接接触，使螺杆齿面的磨损大大减少。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。