台阶

The ledges on subunit were found to be grown up by ledgewise mechanism.

亚单元上有台阶存在，表明它们是通过台阶机制生长的。

For example, he created a triangle-shaped walkway of steps that sits inside a rounded concrete shell.

他以三角形铺设走道台阶，台阶伸入馆内，犹如一个圆形的水泥蛋壳。

It was built of bright yellow shining stone, with long flights of marble steps, one of which reached quite down to the sea.

这宫殿是用一种发光的淡黄色石块建筑的，里面有许多宽大的大理石台阶--有一个台阶还直接伸到海里。

It was built of bright yellow shining stone, with long flights of marble steps, one of which reached quite down to the sea.

这宫殿是用一种发光的淡黄色石块建筑的，里面有许多宽大的大理石台阶--有一个台阶还一直伸到海里呢。

objective to evaluate clinical effect of the handling protaper nickel-titanium rotary instruments in preparation of canals of posterior teeth.methods 96teeth with pulpitis or periapical periodontitis were instrumented by handling protaper rotary instruments using step-down technique,and by k files using step-back technique for control.all teeth were obturated with lateral condensation methods.the efficiency of preparation was analyzed with ra-diographs before and after operation.results no transportation,apical blockage and ledge were found in test.the technique could keep canals smooth.there were two ledge,one instrument fracture and nine transportation in control.the operative time was shorter and post treatment pain seldom occurred in handling protaper group.conclusion the handling protaper niti rotary instruments can prepare the canals effectively and safety.after the preparation,the canals could be easily washed,sterilized and filled.it is an efficient instrumentation method for posterior teeth's canals and be used widely.

目的 评价手用protaper预备后牙根管的临床效果。方法选取患有牙髓炎和根尖周炎的后牙96例，随机分成试验组和对照组各48例，试验组用手用protaper多锥度镍钛旋转器械逐步伸入法预备根管，对照组用k锉，逐步后退法预备根管，两组均用侧向加压充填法充填根管，根据治疗前后的x线片，评价后牙根管预备效果。结果试验组无根管偏移、根尖阻塞、台阶，且根管壁平滑流畅，无器械折断等并发症发生。对照组有2例台阶形成，器械折断1例，根管偏移9例。试验组操作时间短且术后疼痛轻微。结论应用手用protaper预备后牙根管快速、安全，成形效果好，易于根管冲洗消毒及填充，可视为临床上预备后牙根管的有效方法。

The threefold sites near the fourfold sites are strongly affected by the height of the step and terrace.

靠近台阶面的吸附位受台阶和平台高度的影响很大。

The terrace widths and step densities increase with increasing the GaAs layer thickness and then saturates.

原子力显微镜测试表明：在常规分子束外延情况下，GaAs外延层台阶的厚度和台面的宽度随衬底温度的升高而增加，增加外延层厚度会导致台阶的密度和台面的宽度增加然后饱和。

The factors affecting the stair-step height are analyzed and the research results provide theoretical basis for the building orientation and slicing parameters of the prototypes.

左右的侧表面次之。分析了影响侧表面台阶高度的各种因素，找出了影响规律，给出了台阶高度的计算公式。

In order to reduce the loss of dimensional accuracy of stereolithography parts during the post-process, the stair-step effect and the relationship between stair-step effect and the parts dimensional accuracy were studied and analyzed.

研究和分析了光固化成形件台阶效应产生的原因以及对制件尺寸精度的影响，提出了根据表面几何特征进行相应的光斑补偿的方法。利用该方法成形的原型件会留有合理的打磨余量，从而可以在去除台阶效应的同时，保证制件的最终尺寸精

The time-mean, spectral and unsteady characteristics of a wall-bounded turbulent mixing layer flow over an open step and a square-edged rib were investigated experimentally.

本文以开口后台阶引射及窄宽度二维台阶绕流为主要对象，用实验手段研究了近壁湍流混合层旋涡运动的非定常特性。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失