一定的

These cultural and natural heritage is a certain historical period and under the historical conditions, with non-renewable nature.

这些文化和自然遗产是在一定的历史时期和历史条件下产生，具有不可再生性。

Power system is a very strong nonlinear system, and appears as chaos behavior.

电力系统是一个非线性大系统，并表现出一定的混沌行为。

This is a 4 axis unit with a mechanical follower to maintain the probe normal to the surface as it scan over the complex surface.

该4轴系统带一个机械跟随装置，能够保证在探头扫过复杂零件表面时探头与零件表面保持一定的距离。

The results show that the direction of mass jet is independent of electrode material and normal to the electrode surface at the arc spot.

这些汽化物质以一定的速度喷射出去，并与开关工作气体发生高温化学反应，最终附着

There's a certain novelty value in this approach.

这种方法有一定的新意。

It is useful for optimizing combustion and controlling NOx emission.

对优化燃烧、控制NOx排放有一定的指导意义。

Experimental results show that there exist certain interaction between amorphous LDPE and NR.

实验结果表明，LDPE非晶部分和NR之间存在一定的相互渗透。

The results demonstrated that nuclide lymph imaging possessed a certain guiding value in clearance of lymph nodes of early cervical cancer.

以上结果表明，前哨淋巴结核素显像对早期宫颈癌淋巴结清除术具有一定的指导价值。

Enterprise Products has built a number of production lines, and formed a certain scale advantages.

企业已兴建多条产品生产线，并形成了一定的规模优势。

However, Finite element method as a numerical solution, it will have error inevitably.

但是，有限元法作为一种数值解法，不可避免地带有一定的误差。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。