ascertain 六级GRE考研雅思

an attempt to ascertain the cause of the accident.

力求查事故原因的努力。

I ascertained that she was dead.

我断定她已经死了。

ascertaining the facts;

查事实；

I'm going to ascertain the truth.

我要查真相。

Ascertain the first bolt of the M/E aft end and the position of the intermedial shaft bearing.

初定主机末端第一颗地脚螺孔位置，初定中间轴承位置。

We must ascertain the usual customs of the local people and arrange accordingly.

我们必须了解当地人民的风俗习惯,作出相应安排。

The previously unidentified objects have now been definitely ascertained as being satellites.

原来所说的不飞行物现在已证实是卫星。

Inference, which includes apodictic inference and probable inference, is the chief thought pattern of ascertaining case quality.

推理是件性质的主要思维形式，它包括必然推理和或然推理。

researching ultrasonic Doppler effect;ascertaining the threshold of audibility and resolving power.

超声的多普勒效应研究及闻阈和人耳音频分辨本领确定。

In this paper,the terminal of silver coulometry is ascertained according to the sudden change of the pattern of oscillogram.

文中报道了以示波图形突变来确定银量法的终点。

It is ascertained that the PABA may be N-dimethylated using dimethyl sulfate as a methylation agent.

确定以硫酸二甲酯为N——甲基化剂,对对氨基苯甲酸PABA进行N——二甲基化.

A method to ascertain airtightness of regulable refrigeratory, airtightness material selection and a way to made air retaining wall were discussed in this paper.

论述了气库气密性的确定方法,气密材料的选择及气密层的做法,介绍了用正压法检测气库气密性的具体操作过程,并给出了国内外的不同气密性标准。

Mathematical model of seepage flow about waterlocks groundwork is set up, Infiltration room and haplont are ascertained too. Engineering example is given.

摘要建立闸基渗流数学模型，确定渗流场域和单元体，给出工程实例。

Throughout the classical period they believed that man does not create the mathematical facts; they preexist. He is limited to ascertaining and recording them.

在整个古典时期，他们相信数学事实不是人创造的，而是先于人而存在的，人只要肯定这些事实并记录下来就行了。