可切的

Numerical results demonstrated that there are three kinds of the instability for the under-expanded supersonic jets according to their shock cell structure patterns:(1) the regular reflection shock cell with a single shear layer,(2) the Mach reflection shock cell with two shear layers and (3) the curved Mach stem with a relatively high expansion ratio.

计算结果表明欠膨胀超声速射流的失稳机制根据射流激波结构的特征可分为3种失稳模式：具有规则反射激波结构和单一剪切层特征的射流不稳定性；带有马赫反射激波结构和双剪切层特征的射流不稳定性；具有弯曲马赫杆和高度欠膨胀射流的不稳定性。

The electric displacement perpendicular to the plate surface is singular and proportional to the bending stresses.

压电效应对面内弯曲正应力的影响很小，可忽略不计。2）压电效应对剪应力影响较大，切向电场强度和电位移的集中程度随径厚比变化趋势和切向剪力的变化趋势相同。3）中面上孔边电势和垂直于板中面的电场强度的集中程度随径厚比的减小而减弱，垂直于中面的电位移的集中程度随着径厚比的减小而增强。

According to the morphological characteristics of cementite lamellae, the deformed pearlite can be divided into three kinds: irregularly bent lamella (pearlite lamella originally inclined with large angles to the rolling plane and irregularly bent after deformation); coarse lamellae with shear-band (the rhomboidal blocks of weakly deformed lamella bounded by shear band) and fine l...

按 渗碳体形态特点，变形珠光体组织可分为以下3种类型：(1)不规则弯曲片层型，即变形后的渗碳体与轧制面呈大角度偏离且不规则弯曲的珠光体。(2)带有剪切带的粗大片层型，即被渗碳体剪切带分开且变形轻微的珠光体。(3)精细片层型，即与轧制方向平行排列、片间距细小且渗碳体严重变形的珠光体。精细片层区域的比例随着轧制压下率的提高而增大。此外，重度冷轧变形还引起渗碳体严重塑性变形和部分溶解。

According to the morphological characteristics of cementite lamellae, the deformed pearlite can be divided into three kinds: irregularly bent lamella (pearlite lamella originally inclined with large angles to the rolling plane and irregularly bent after deformation); coarse lamellae with shear-band (the rhomboidal blocks of weakly deformed lamella bounded by shear band) and fine lamella (heavily deformed lamella aligned parallel to the rolling direction with fine interlamellar spacing).

按渗碳体形态特点，变形珠光体组织可分为以下3种类型：(1)不规则弯曲片层型，即变形后的渗碳体与轧制面呈大角度偏离且不规则弯曲的珠光体。(2)带有剪切带的粗大片层型，即被渗碳体剪切带分开且变形轻微的珠光体。(3)精细片层型，即与轧制方向平行排列、片间距细小且渗碳体严重变形的珠光体。

Nevertheless, in these aPproaches the contact intethee are charactered sboly edstiffeess K. and K.' which is not PerfeCt and rigorous in thc vitw of solidmechanics and rather rough for the description of the behavior of the iDtfores. Incollbet, taken as a contact Problem, the principal chatrs of the iDtCthees can bereflected: the cbntact inifore is of shear strength Which imPlies tha a genericpair of contact points on the inidse will displace coincidentally if the tangentialfbrce at this POint has not reahed the 1imit resistance, else, relative s1ide betwee the\ points will occur along the tangental direction.

本论文在对这两种方法进行认真的分析后，说明它们对不连续面的描述并不合理，也无法反映出不连续面的主要力学特性，同时指出，将带有不连续面的岩土工程问题作为接触问题计算更为合理，它可将不连续面受力变形的主要特点反映出来，即：(1)接触面具有相应的&抗剪强度&，即当接触面上某一点处的切向应力小于该点处的抵抗强度时，点对共同变形；达到强度时，则沿切向发生相对滑动；(2)在整个变形过程中，发生接触的变形体不能相互侵入。

Friends of Grace paper products company nanshan existing tri-color, two sets of two-color watermark machine production lines, production machinery configured carton including Taiwan detachable three-color watermark machine, MY --- 2500-type rotary slotted angle cutter, FY ---2500 points±paper type pressure-ray machine, ML --- 1300-type die-cutting machine, DX --- 1300 nail box machines that can contract a variety of specifications of high, middle and low-grade, single, double corrugated boxes, carton manufacturing, at present our factory has the production of 20 million square meters in three of five criteria for corrugated box production capacity, 50,000 cartons per day of production scale.

友宏公司南山纸品厂现有三色、双色水印机两套生产线，配置的纸箱生产机械包括台湾可分离式三色水印机、MY---2500型轮转开槽切角机、FY---2500型薄刀分纸压线机、ML---1300型模切机、DX---1300钉箱机等设备，能承揽各种规格的高、中、低档，单、双瓦楞纸箱、纸盒的制造，目前我厂已具备年生产2000万平方米三层、五层标准瓦楞纸箱的生产能力，每日5万只纸箱的生产规模。

In this paper,the three dimensions finite element analysis on a 2 pad tilting pad bridge bearing load cell in large turbine generator sets has been made.

对大型汽轮发电机组剪切桥式两可倾瓦轴承负荷传感器结构进行了三维有限元分析，研究了不同边界条件对传感器结构应力场的影响，计算与试验结果对比表明；所建立的有限元模型是正确的，具有较高的计算精度，可将其用于两可倾瓦轴承负荷传感器最优结构设计。

Although paper has to be fed and held down manually, arbitrary hold-down pressure against paper is thus available to avoid the disadvantage resulting from improper hold-down pressure The paper-cutting blade holder is driven by a motor, but it can also be operated by means of a handle to suit the needs of the location where power supply is not yet available.

本机的送纸与压纸需要手动，但压纸时，压力可任意选择，故可避免压纸的压力不适所引起的弊病。刀座切纸是由电动机驱动，但也可用手柄摇动，可适用在无电源的状态下下使用。

The study shows that adding steel fiber into concretecan improve effectively the punching shear bearing capacity of pile cap , or else the effective depth of the pile.

研究表明，纲纤维的掺入可有效地改善桩承台的受冲切性能，提高桩承台的受冲切承载力，减小承台的有效厚度。

This paper introduces an advanced oil-mist lubricating manner, discusses the possibility of applying auto-oil mist lubricating to tobacco machine tools, researches the working state by comparison,and testifies to this way in saving lubricating oil,prolonging machine tools life,and improving product quality.

介绍了一种先进的油雾、油气润滑方式，探讨了对烟机切刀进行自动油雾润滑的可行性，对比研究了其润滑工况，证明采用该润滑方式可省润滑油用量，提高产品质量，延长切刀使用寿命。还简单介绍了相应的单片机控制的微油雾润滑系统的开发

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！