压下

The research results showed that (1) inelastic compressive behavior of the gusset plate was similar to a cantilever plate in compression load,(2) buckling strength was reasonably predicted based on an inelastic plate buckling equation and buckling coefficient, and (3) design guidelines of the gusset plate in compression were proposed with inclusions of edge stiffeners.

本研究结果显示：(1)含挫屈束制消能斜撑之接合板在受轴压作用下，将产生的挫屈模式为Fixed-Free、(2)接合板在Fixed-Free模式下之挫屈强度预测及(3)如何加劲接合板使其强度能达到降伏后之非弹性挫屈行为。

With 54# half-refined paraffin as raw material,the technology of the second injecting steam of ethane cracking is used for reference in the paraffin cracking process which avoides the coke produced in cracking furnace.

采用优质的54#半精炼石蜡，将乙烯裂解二次注汽技术融合在石蜡裂解技术中，避免了裂解炉结焦；考察了单程裂解、炉前甩残蜡循环裂解、炉后甩残蜡循环裂解在相同的工艺条件下的产品质量、产品收率及存在的问题；验证了新的炉后甩残蜡循环裂解是较好的工艺路线，在较高的水蜡比15%，高温600℃、低烃分压和短停留时间(2s左右)条件下，能生产出高质量的α-烯烃产品(总烯烃质量分数在97%以上，α-烯烃含量为88%)。

The mathematical models for overall breaking process of circuit breaker are developed, through which the driving mechanism and the arc chamber, the interruption performance and the opening velocity are closely connected, the breaking process under different interrupting conditions are simulated, then the arcing time difference is determined. The interrupting conditions include line charge current, breaker terminal fault current and short line fault current .

本文建立了一种把操动机构与灭弧室相联系、开断性能与运动特性相联系、一维和二维模型相结合的压气式SF6断路器开断性能的仿真方法，对不同开断条件下（包括线路充电电流开断、不同试验方式的端子短路开断、不同试验循环的近区故障）断路器的开断过程进行了分析，用仿真的方法确定了断路器在不同开断条件下能成功开断的燃弧时差，并给出了开断性能与运动特性之间的关系。

Trigyna enhanced with season, being consistent with its growth rhythm. Comparing with other xerophytes, R. trigyna had very low (Ψ and (Ψ, presenting its strong ability of maintaining high osmotic pressure and low water potential.

说明长叶红砂在季节变化中历经了逆境锻炼，其耐水分亏缺能力随5、7、9月逐渐递增，这与植物的生长发育节律相吻合；与其他荒漠旱生植物相比，长叶红砂的Ψ(上标 sat 下标 s和Ψ(上标 tlp 下标 s值非常低，具有很强的忍耐高渗压和维持低水势的能力。

Results 278 cases of patients who were followed an average follow-up of 3 months, all patients have achieved satisfactory therapeutic effects, and surgery-related complication rate was 9.57%(31/324), including 2 cases of acute intracranial hematoma, intracranial infection in 1 cases, non-tension pneumocephalus in 14 cases, seven cases of subdural effusion, low intracranial pressure in 5 cases. Conclusion Drainage using minimally invasive surgery (one-time use of YL-1 type of intracranial hematoma puncture needle grinding and urokinase technology) can achieve a more better therapeutic effect than burr-hole craniotomy with drainage or simple minimally invasive irrigation and drainage in the treatment of chronic subdural hematoma.

结果：本组278例病人获得随访，平均随访3个月，全组患者均取得较满意治疗效果，与手术相关并发症发生率为9.57%（31/324），包括急性颅内血肿2例，颅内感染1例，非张力性气颅14例，硬膜下积液7例，低颅压5例，结论：采用微创引流手术（使用 YL －1型一次性颅内血肿穿刺粉碎针及尿激酶技术治疗慢性硬膜下血肿，能取得较钻孔引流术单纯微创冲洗引流更好的治疗效果。

For the condition where both outlet states of cold plate are at superheated states, the mass flowrate for the fixed heating load is marginally higher than that of the smaller heating load, and the difference is insensitive to the rise of heating load. For this situation, the effect of accelerational pressure is negligible, and it is mainly attributed to two-phase/single-phase distribution pertaining to the effect of heating load.

若两冷板的出口均为过热状态下，固定热负载一端的流量会略多於施加瓦数较高的一端，且其差异量会随热负载不同而缓慢增加，在此一状况下，则加速度压降可以忽略不计，其原因在於单相／两相流在热负载下单相区与两相区所占的比重不同所致。

Under the experimental conditions of the dissertation, more than 10% loss reductions have been obtained by using the blades with riblets only on the pressure surface at both high and moderate loading.

首次将表面开槽减阻技术用于平面扩压叶栅中，取得明显的减损效果，其结果表明：在本试验条件下，采用叶盆单面开槽叶片方案，在中等和高负载条件下，均获得10%以上的减损增益。

Hurtle to press to belong to to material of cold process, the original material that use is all the plank material that has the good ductility generally, usually under the normal temperature, the material places among the molding tool, passing the output pressure function of punching machine or press machines under, make material press the shape occurrence su of the molding tool decision transform, get need of zero, parts, sometimes transform once and can't attain the request because of the material, also have the cent to hurtle to press for many times and transform gradually on the molding tool of dissimilarity, end attain to design the size request.

机械类的帮我翻译一下吧~谢谢了！冲压属对材料的冷加工，使用的原材料一般都是有良好的延展性的板材，通常在常温下，材料放置于模具间，通过冲床或压床产生的压力作用下，使材料按模具决定的形状发生塑性变形，得到所需的零、部件，有时因材料一次变形不能达到要求，也有分在不同的模具上多次冲压、逐步变形，最终达到设计尺寸要求。

It is the soil mass maintained by the umbrella-shaped root system of trees during the geological history,and it is formed by the interactive compression of tree load and growth of main root system and by the differential compaction of surrounding soil mass;in other words,it also is a kind of the sedimentary textite or sedimentary structure formed under the influences of biological process.

它是地质历史中，树木伞状根系所维系的土体，在树木的自重荷载和主干根系生长的相互挤压作用下与外围土体的差异压实造成的；换言之，它又是一种在生物作用影响下形成的沉积结构体或沉积构造。

A full-size fatigue life test equipment for coiled tubing is developed to simulate the conditions of coiled tubing operation in fields.

为了能比较真实地模拟连续管在实际作业工况条件下，即在弯曲和内压联合作用下的疲劳寿命，研制出了一套专门用来进行连续管低周疲劳寿命的实物试验装备。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。