难达到的

The hardware consists of industrial personal computer, temperature data collecting module, analog output card and thermocouples. With Visual Basic6.0 as a development platform, the software is based on control algorithm.

其温度控制通常是通过高频加热设备上的手动旋钮调节输出功率，从而控制温度，这样很难达到精确控制试验样品的升降温速度和进行恒温控制，本文设计一套高频感应加热设备温度控制系统，控制界面友好，可以直接在计算机上设定高频感应加热设备的温度变化曲线。

Because of the non-linearity, time- variability, multi-parameter, intense coupling of the heating process and especially, the random interfere and anfractuosity of process, precision mathematics model is difficult to be established. The routine PID algorithm can not meet the requirement of control.

高岭土回转窑的加热过程中存在非线性、时变性、多参数强烈耦合这些问题，且随机干扰以及过程机理错综复杂，难以建立被控对象的精确数学模型，采用常规的PID算法很难达到控制要求。

But there is much disturb and cacophony on power line, using commonly communication"s mode is difficult to attain reliability"s demand.

但是由于电力线上的干扰及杂音比较大，采用普通的通信技术很难达到可靠性的要求。

Shelter ancient allowance not only performance poorer and what depend on a series of assume the condition is very inaccessible strictly, its suitable scope and performance are consequently suspectable.

庇古津贴不仅绩效较差而且所依赖的一系列严格的假定条件很难达到，因而其适用范围和绩效都值得怀疑。

If the flying bubble collides with left or right wall, it reflects symmetrically, allowing you to hit areas that may seem very difficult to reach.

如果飞行泡沫相撞的左边或右边墙，它反映了对称，让您受灾最严重的地区可能似乎很难达到。

Second, terrazzo wear-resisting, lasting, and designed a variety of complex patterns, which use a block of granite, marble is difficult to achieve.

二是水磨石耐磨、持久，并可设计成各种复杂的图案，而这一点用整块的花岗石、大理石则很难达到。

Distortion in fiscal information is a great menace, the possible consequences of which may shackle enterprises" interior management and administration, weaken efficacy of governments" macro-control, traumatize investment environment, and damage interests of investors and creditors, and so on.

会计信息失真一直是会计学界研究的重点课题，但由于会计信息失真产生的原因是多方面的，单纯从会计学角度来研究解决这个问题很难达到预期效果。

This type of lifestyle is even rare for upper middle class American family.

事实上在美国中产阶级以上的家庭都很难达到这样的消费水平。

There are many kinds of air-borne equipments and the signals to be measured are complex, it is hard to attain the goal of fault diagnosis and isolation just use one method.

由于运八系列飞机上装备的机载设备种类比较多，测试信号复杂，单纯使用一种故障诊断方法很难达到故障诊断与隔离的目的。

I'm looking foreward to my new job although I way find it difficult to measure up to my predecessor, who did it for fifteen years before she retired.

我期待着这份新工作，然而我可能会觉得很难达到我的前任的水平，她在退休前干了15年。

We will see more and more activist government policies that distinguish economic activities according to the nationality of the actors.

我们将看到越来越多激进的政府政策，这些政策根据企业的国籍来区分经济活动。

If we can prove the independence of an axiomatic system, then we can guarantee the conciseness of this system, ie.

如果能够证明某个一阶谓词系统的独立性，那么就能够保证该系统的建立是精炼的，即没有任何一条公理或推理规则是多余的。