focal distance

The size of the illuminated area at the focal distance.

在焦点距离所照亮面积的的大小.

A New Manufacture Technique for Long Distance Focal Length Lens

一种新的长焦距透镜的制造方法

Variation of focal distance of immersion focusing type probe with environment temperature

水浸聚焦探头的焦距随环境温度的变化规律研究

A Simple Method to Measure the Focal Distance and Cardinal Points of a Compound Optical System

测量光具组焦距和基点位置的简便方法

This may avoid remedy mistake because of the actual different focal distance brings from AS function.

这样可以避免AS功能启动是由于实际的焦距不同带来的矫正错误.

The improvement and error analysis of measuring focal distance of thin lens

薄透镜焦距测定的改进及误差分析

Conjugate method is an accurate, simple and convenient method to measure the focal distance of thin convex lens.

共轭法是一种较为准确和简便的测量薄透镜焦距的方法。

The dogs of experiment group undergoing simulative partial costectomy and costophrenic angle closure were continuously exposed to HIFU with 0.8 MHz waves, 120 mm focal distance, fixed-point exposure, and 220 W sound power for 90 seconds. The liver damage area were measured and observed pathologically.

以0.8MHz、焦距120mm、定点点打、声功率220W连续照射两组实验犬肝右叶90s，对肝毁损灶进行面积和体积测定及病理学检查。

Nokia : We use a new Active hyper focal distance system for video.

我们使用了一项名为“Activehyperfocaldistancesystem”的视频新技术.

But only with the right focal distance and correct aperture could we get the true pictures.

只有我们调对了焦距,对准了光圈,才有可能得到真实的图像.

The convex lens focal distance measurement method of imaging technology with CCD

实验室正透镜焦距测量方法之CCD成像技术的运用

On the determination of errors in thin lens ˊ focal distance

对测定薄透镜焦距误差的探讨

Splashplate antennas with variable focal distance for forming the elliptic beam

椭圆波束变焦距溅散板天线

Using Spectrometer to Measure with Precision the Focal Distance of Concave Mirror

用分光仪精确测定凹透镜焦距

Error Analysis and Ways to Make fewer in Measuring Focal Distance of Convex Lens

凸透镜焦距测量的误差分析和减小方法

Simulation and correction experiment on eye ametropia& determination of focal distance ( focal power) of thin lenses

眼睛屈光不正的模拟与矫正实验&薄透镜焦距（光焦度）的测定

Light signal visibility test back focal distance

灯光信号显示距离测试

The phased array transducer through the electronic control line may the very convenient adjustment focal distance, the focal point size and the focal point intensity, has the very great practical value in the clinical treatment.

相控阵换能器通过电子控制线路可以很方便的调节焦距、焦斑的大小和焦斑的强度，在临床治疗中有很大的实用价值。