难以控制

In the past,there were large number of dzeren,but out of the uncontrolled hunting,most of the dzeren had been hunted and was coming to extinction.

过去我国黄羊的数量较多，后来由于缺乏控制的狩猎，不断被大量捕杀之后难以恢复，数量逐年下降，已经成为稀有物种。

Some of these undertakings stick in the craw of an army with an understandable instinct for control freakery.

有些担保让军队非常难以接受，因为他们本能的觉得那些是控制狂行为。

The nonlinear hyperbolic conservation laws of the transient flow of the media in gas pipeline are hard to he solved, so, the control conservation laws are constituted of mass, momentum arid energy conservation laws, TVD/Godunov hydrid algorithm is used to simulate the transient flow in gas pipeline, and the traditional splitting approach processing nonlinear convection in momentum equation is dismissed ,the convection tern; is directly processed, in the way, the stablization of the algorithm and emulating accuracy of the transient flow are greatly improved.

针对管道中介质瞬变流动的非线性偏微分方程组难以解析求解的问题，由质量、动量、能量三个偏微分方程构成的控制方程组，应用TVD/Godunov混合算法数值模拟天然气管道中气体的瞬变流动，摒弃了传统的差分方法时动量方程非线性时流项的线性化处理，而直接处理非线性对流项，从而大大提高了算法的稳定性和管道瞬变流动的仿真精度。

During the actual production, that the oxygen contamination from the crucible material by heat composition increases the oxygen content of molten steel will result in melting losses of the alloys in the molten steel, and will results in more heavier melting losses of the alloys, incontrollable exact chemical content of molten steel, increment of oxide inclusions and bad processability and serviceability, especially in the high strength(σb≥1600MPa) steels and alloys with special performance used in aerospace industry, manufacturing industry for precision instruments and meters, military industry, nuclear industry etc. because these steels usually have a high content of some active alloys such as Ti, V, Nb, Al, RE, etc. and a nearly zero content of dissolved oxygen.

实际生产中，如果炉衬热分解向钢液供氧，势必会造成钢液中合金元素的烧损，尤其是在航空航天、精密仪器仪表制造、军工及核工业部门使用的某些具有特殊性能的高强度(抗拉强度σb≥1600MPa)合金或钢材，因它们通常需要具有较高的活泼合金元素(如Ti、V、Nb、Al、RE等)含量，且钢中溶解氧含量接近于零，炉衬热分解供氧将造成这些合金元素的大量烧损，其结果是钢液化学成分难以精确控制，并增加了氧化物夹杂含量，恶化了钢的加工和使用性能。

Considering that the phases are hard to controll accurately for the high power microwaves, the spatial powers combining of both parallel beams and intersectant beams is investigated.

针对目前高功率微波相位难以精确控制的情况，结合高功率微波空间功率合成的应用，对有源天线阵列的平行波束和交叉波束的空间功率合成作了初步研究。

They would criticize the cafes'disadvantage, but also know the cafes'social function actually. So they don't agree to the government's Jacobinical reform what may be one of the reasons of why the government's action always can't achieve it's scheduled effect.

如果说政府以控制和打击为主要手段，那么精英虽然也批评茶馆的弊病但亦深知其社会功能，所以他们不赞成政府的激进改革，这可能也是为何政府的行动总难以奏效的原因之一。

The aPplication tools aPplied tomissile system design deal with complex comPuting models and data models, and that thedesign process is quite complex itself, all which make interaction among aPplications quitedifficult, accordingly the efficiency of design is very lowAn integrated method is proposed to solve the difficulty of interaction amongmulti-disciplinary and different designers and tO promote design efficiency, shorten cycle andreduce cost of the design.

在导弹武器系统设计领域，工程师所利用的应用工具及相应的计算模型和数据模型异常复杂，再加上设计流程本身固有的复杂性，使得应用之间的交互及对整体设计过程的控制非常困难，设计者之间难以交流设计情况，使得整个系统的总体设计效率低下。

MENOPAUSAL WEIGHT GAIN is difficult to avoid, but can it be controlled?

绝经后体重增加是难以避免，但不能加以控制？

Microreaction system has an advantage over conventional reaction system, which is of huge application value in the field of military and commerce.

活性聚合可以通过对聚合体系的选择和聚合条件的控制来制备具有预定结构的聚合物，这是采用传统聚合方法难以实现的。

Still your unruly thoughts, and don't respond in a preconditioned way.

跟以前一样，不要用预先处理的方式来控制你那些难以驾驭的想法。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。