在困难中

However, as a result of the market economy system and the long period of accumulating, the resourced-based city has been confronted by many conflicts and difficulties, such as the crocking up of resource, the depravation of environment, the singularity of industry structure, the stress of obtaining employment, the declining of standard of living.

资源型城市在中国经济发展过程中起着重大作用，但是长期受计划经济体制的影响及长期的历史积累，资源型城市面临着资源衰竭、生态环境恶化、经济和产业结构单一、就业压力大、生活水平下降等许多矛盾和困难。

The old system of laser range finder, which processes laser emission system, laser incepting system and measuring round-trip time of light pulse by separated cell circuit, makes the cost of exploiture expensive, debugging difficult, circuit complex, precision inaccurate, reliability low, bulk and weight great, even without any standard suited gate together with other instruments. Therefore, popularization application of laser range finder is cumbered.

早期的激光测距系统在激光接收机中通过分立的单元电路处理激光发、收信号以测量光脉冲往返时间，使得开发成本高、电路复杂，调试困难，精度以及可靠性相对较差，体积和重量也较大，且没有与其他仪器相匹配的标准接口，上述缺陷阻碍了激光测距系统的普及应用。

On the basis of expounding the theory and strategy of new product design of the railway transportation of refrigeration, the writer analyzes the products of the railway transportation of refrigeration and disserts the present condition and foreground of product designing in detail.

本论文在铁路冷藏运输发展困难的情况下，分析铁路冷藏运输的现状和前景，指出只有不断加强货运营销战略中的重要步骤——产品战略，才能有效的、可持续的发展铁路冷藏运输。

There are more difficulties than eases in the real life.

还有更多的困难比例，在现实生活中。

Mr . chen ' s family has been embroiled in several corruption scandals

这会使我们永无止境地纠缠在中东的困难局面中。

American workers need more to help them cope in a globalizing economy.

在全球化的经济中，美国的工人需要更多的帮助来应对困难。

It's true that some peope have more hurdles in life than others.

不可否认有些人在他的人生中遇到的困难比别人多。

This welding wire not only has the inherent properties of metal powder-cored wire, such as with better welding quality, without slag, highly efficiency and conveniently adjusting the alloying elements etc., but also has the advantage of low hardness in as-welded (less than HRC45), good machinability, high hardness in as-aged (more than HRC55) and better wear resistance with customary working procedure on making or repairing equipments such as rollers when reasonable designing the alloys content. The author adequately makes use of the high-tempering in the required stress relieving working procedure. During this working procedure, which causes the hardness of overlaying metal increased by the reason of austenite changes into tempered martensite and more chiefly what is the precipitation of a lot of carbide by secondary hardening simultaneously. This wire can solve the hard rolled problems of some solid wires with higher alloys while it can get over the conflict of existing overlaying materials what are always possesed high hardness with poor machinability or low hardness, good machinability with poor wear resistance. Further, it also can overcome the intenerating phenomena between welding beads and make the external hardness of overlaying metal uniform. Be sure it could be found important meaning in the overlaying of wear-resistant equipments, such as the precise roller.

该焊丝除了具有金属粉型药芯焊丝焊接质量好、无渣、高效率和合金成分可方便调节等固有的优点外，合理的设计粉芯中的合金成分，按通常工序制造与修复轧辊等设备，充分利用必需的消除应力工序的高温回火，堆焊层金属在奥氏体转变为回火马氏体的同时更主要是通过二次硬化析出了大量碳化物导致硬度增加，使得该焊丝还具有焊态硬度低(小于HRC45)、机加工性能好和时效态硬度高(大于HRC55)、耐磨性能好等优点，解决了某些高合金实芯焊丝轧制困难的问题，同时克服了现行堆焊材料硬度高、加工性能差或者硬度低、加工性能好、耐磨性差的矛盾，并能克服焊道之间的软化现象，使堆焊表面硬度较为均匀，对耐磨件，譬如精轧辊的堆焊具有重要意义。

Study and application on reservoir sensitivity of Baimiao gas condensate field ;2. Yangtake gas condensate field exists a suit of composite salt bed in Eogene system,in which interspersing soft mudstones.

羊塔克凝析气田位于塔北隆起羊塔克构造带1号构造东端，下第三系普遍存在一套复合盐岩层，特别是夹在复合盐岩层中的软泥岩、复合盐膏层缩径与井漏并存，造成井眼极不稳定，给钻井施工带来很多复杂和事故，其钻井风险很大，尤其是216mm井眼的电测和下套管作业更是异常困难。

Objective To evaluate the feasibility of the fibreoptic intubating laryngeal mask airway CTrach in anticipated difficult airway caused by face and neck scar contracture.

目的 评价CTrach光导纤维可视性气管插管型喉罩在面颈瘢痕挛缩导致的预测困难气道处理中应用的可行性。

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％。