减压

Fluid mechanics from the point of view, the valve is a local resistance can change the expenditure components, namely, cutting expenditure by changing the area so that the velocity of the fluid and kinetic energy changes, resulting in different pressure loss and thus achieve the purpose of decompression.

从流体力学的观点看，减压阀是一个局部阻力可以变化的节流元件，即通过改变节流面积，使流速及流体的动能改变，造成不同的压力损失，从而达到减压的目的。

You can try to adjust valve adjustment knob, if does not work, you should consider replacing the heart valve filter.

可以试着调节减压阀的调节旋钮，如果不起作用，应考虑更换心的过滤减压阀。

Vacuum transfer line is one of the most important pipelines of atmospheric vacuum distillation plant which starts from the exit of heaters and extends to entrance of distillation tower.

减压转油线是炼油厂常减压蒸馏装置中加热炉出口到蒸馏塔底入口的管道，它是炼油装置中最重要的管道之一。

objective to evaluate early signs of avascular necrosis of femoral head in adult by ct and to guide clinical treatment.methods the cases with suspicious diagnose of anfh were scaned in the both hip joints by x ray and ct to find the early signs of anfh with ct.results early signs of anfh using ct showed that, in 38 femoral heads 31 cases, there were radiate star shape of high density osteosclerosis of the trabeculae in 13 femoral head.twenty five femoral heads showed osteosclerosis and trabeculae structure disappearing and vague,incoordinately low ostedensity area and cyst change.there were fracture under the cartilage and light subsid in 5 cases.the cases in stage ⅰwere given decompression, while the pationtsresul in stageⅱand stageⅲ were given decompression and ostetransplant.conclusion ct results show that the sign of the high osteodensity and low osteodensity and cyst change can disply early anfh.

摘 要］目的：探讨成人股骨头缺血性坏死的早期ct征象并指导临床治疗。方法：对临床疑诊anfh的全部病例均行x线平片及ct检查，分析anfh的早期ct征象。结果：早期anfh的ct表现：31例38个股骨头，其中13个股骨头骨小梁呈放射状高密度的&星状征&，骨小梁境界清楚、锐利，属ⅰ期；25个股骨头表现为骨硬化，骨小梁结构消失、模糊不清，骨密度减低及囊性改变，属ⅱ期；并有5个股骨头在ⅱ期影像学改变基础上出现软骨下骨折及轻微塌陷，属ⅲ期。治疗结果：ⅰ期行钻孔髓内减压术，ⅱ、ⅲ期行钻孔减压植骨术。

Summary : Pressure relief valve and pressure reducing valve sometimes adjust to press out of order in the usage process , this is mainly because of block of damp finestra of the valve element or pilot valve .

溢流阀，减压阀这两种压力控制元件在液压设备中用处很广泛，溢流阀作用是调节系统压力，减压阀作用是减少某一支路的压力。

It is to protect the valve and make the safe use of the device, is also a valve failure signal device.

它是保护减压阀并使之安全使用的装置，也是减压阀出现故障的信号装置。

It is to protect the valve and make the safe use of the device, is also alve Balance Valves failure signal device.

它是保护减压阀并使之安全使用的装置，也是减压阀出现故障的信号装置。

This can lead to users applying excessive heat to the valve, possibly creating leakage at the outlet connection, the valve packing , and especially from a fusible metal relief device if the valve is so equipped.

这会导致用户过度加热阀门，可能造成排气口接头和阀门衬垫处泄露，特别是从易熔金属减压装置处泄露，如果阀门装有易熔金属减压装置的话。

Incidence of decompression sickness was significantly higher in subjets aged 30～36 years than in those aged 19～20 years under the same experimental conditions.

在同样减压条件下，年龄相同、预吸氧时间长的，减压病的发生率明显减少或不发生。

Treating different patients of decompression sickness with different treatment approaches produced good results; effective prevention was vital for the occurrence of decompression sickness.

根据不同类型的减压病采用相应的治疗方案，治疗效果确切，有效的预防是防止减压病发生的重要措施。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。