传统的CSG实体显示方法不仅费时，而且难以控制明暗效果。
The traditional shading methods for CSG models are not only costly, but also inefficient to control the shading effects.
由于混合动力汽车结构比传统汽车更加复杂而且难以控制，因此混合动力汽车的开发应建立在试验台架的基础上进行分析研究。
Comparing with HEV and traditional vehicle, HEV is hardly controlled, so the development of HEV is based on the analysis and study of HEV test bed.
例如，它难以正确使用，root用户还是可以从中脱离，而且它根本不去控制网络访问。
For example, it's hard to use correctly, root users can still escape from it, and it doesn't control network access at all.
最有效和最重要的控制冲动——这些讨人厌的而且是难以控制的冲动——的方法之一就是更清晰的意识到这种冲动。
One of the most effective and important methods for controlling an impulse -these worrisome urges that we have difficulty controlling -is to become more aware of it.
如果投机活动超出控制之外的话，可以带来难以估计及无法令人满意的结果，而且你可能在处理钱财事务时，变得怒不可遏。
Speculation, if allowed to get out of hand, can produce unexpected and unsatisfactory results, and you may have a tendency to go off the deep end in handling financial matters.
然而，决定整车控制策略的参数较多，一般是靠经验选择，而且难以用常规的方法来优化。
Usually, the parameters of the vehicle's control strategies are selected according to experience, and are difficult to be optimized by using conventional methods.
医学实践非常复杂，有些医疗过程中所发生的变化可以预防，但也有一些情况不仅可以预见而且也难以控制。
Medical practice is very complex, the change that produces in process of some medical treatment can prevent, but also a few circumstances can foreknow not only and also control hard.
由于在线分析仪表不仅价格昂贵，而且分析仪表滞后大，最终将导致控制系统的性能下降，从而难以满足生产要求。
On-line analysis instruments have several disadvantages including costly price, great lag etc., which lead to descend of control system's performance and can't meet production requirements.
测定黄大豆及农产制品中粗纤维，目前采用国内国外通用的标准方法费时费力，而且操作繁琐，难以控制。
At present, the coarse fiber in soybean and agricultural food products is determined by the standard method commonly used in home and abroad.
仅出售少数股权恐怕难以筹到足够的现金，而且因为买家得不到控制权，还会降低交易的价值。
Selling a straight minority stake might not raise enough cash, and it might reduce the valuation on the sale because the buyer wouldn't be getting control.
但是艾条燃烧时产生大量的烟雾，污染空气，而且温度难以控制易造成皮肤损伤。
Moxa burning is not only producing air pollutions but also injuring skin without good temperature controlling.
而且SG参数随着不同运行工况变化而变化，传统的固定参数PID控制系统难以在全功率范围内取得令人满意的结果。
Whats more, SG parameters undergo large changes according to different operational conditions. The SG cannot work satisfactorily with conventional fixed PID gains over full operating range.
而且SG参数随着不同运行工况变化而变化，传统的固定参数PID控制系统难以在全功率范围内取得令人满意的结果。
Whats more, SG parameters undergo large changes according to different operational conditions. The SG cannot work satisfactorily with conventional fixed PID gains over full operating range.
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