Obviously during the observation no bright light should interfere.

He stumbled over a stump and fell flat on his face.

他给树桩一绊，摔了个嘴啃泥。

They chased them and fell flat on their face because they weren't prepared.

他们总在追，摔趴在地上，因为他们没有准备好。

The new scheme fell flat on its face in spite of all the financial support that was given.

新的计划尽管得到丰厚的资金支持，但是还是一败涂地。

He had knocked her flat on her face.

他把她揍得直挺挺趴在地上。

Your reasoning fell flat on its face.

你的推理对它的脸来说彻底失败。

Firstly, tripping over and landing flat on your face.

第一，脚被绊了一下，摔了个嘴啃地。

Like Mr Gates before him, Mr Jobs could fall flat on his face.

就像在他之前的盖茨一样，乔布斯可能会遭遇惨败。

Often they fall flat on their face.

他们往往会以失败收场。

I won't let you fall flat on your face.

我会帮助你，不会让你失败的。

He slipped and fell flat on his face.

他脚底一滑，摔了个嘴啃泥。

A man walked in off the street and fell flat on his face, unconscious.

一个男人从街上走进来，趴倒在地，不省人事。

Some parametric computing formulae are derived with an optical fiber with spherical end used for out-of-focusing coupling, and by means of this, the laser-induced damage on fiber flat end face is eliminated in the case of inserting a pulsed YAG: Nd laser beam into the fiber.

导出了用端面球透镜离焦耦合时一些参数的计算公式，并用这种耦合方法消除了脉冲YAG：Nd激光注入光纤时在光纤平端面产生的损伤现象。

The heat density functions are looked as the boundary conditions and the 3D temperature fields of the waved-edge milling insert and flat rake face milling insert are analyzed with FEA method and judged with blurry mathematical theory.

以受热密度函数为边界条件，进行波形刃铣刀片和平前刀面铣刀片三维温度场有限元分析，并对有限元分析结果进行模糊数学综合评判。

Boundary condition of FMA of stress field was built. Finite element analysis of stress field was processed. Stress distributing regularity of wave edge and flat rake face milling insert was got. 4.

建立了应力场有限元分析的边界条件，对与温度场分析时相同时刻的应力场进得了有限元分析，得出了平刀面铣刀片和波形刃铣刀片的应力分布规律。

The flat tool face points upwards.

平的工具面朝上。

The flat face and the side face of the plastic hollow brick are provided with a sealing groove, a sealing strip and through holes; the plastic hollow brick can be formed once by pressing.

其构成是塑料空心砖的平面、侧面设有密封槽、密封条、通孔，一次压制成型。

Common processing method for scraping the method, the system can scrape flat face oil and storage capacity in tiny chips in the pits of ash, improve the benchmark reflect reliability and stability.

常见加工方法为刮制法，刮制的平板工作面能贮存润滑油和容纳微小灰屑在凹坑中，提高了基准体现的可靠性与稳定性。

Process for Machining the Flat Face of the Inspection Window for the Deep Endshield of YZR Range of Motors

YZR系列电机深端盖观察窗平面的加工工艺

This is partly the result of having large eyes that are set on a relatively flat face, thus increasing binocular vision.

由于猫头鹰面部相对扁平，再嵌上一双大眼睛，这样就增强了双眼视力。

The man with the flat face and the broken nose crushed the end of the cigarette on the table.

长着扁脸和断鼻梁的人在桌上揿灭了烟蒂。