Store the meter in the shade with non high light-line with temperature of -10 ℃ to +70℃, and humidifies of less

保存在無直射光線亚洲欧美日韩精品久久不卡，-10℃～+70 ℃溫度又爽又色网站，60%以下濕度的地方久久久久久久久久精品一。切勿和有機溶劑或油物接觸。

Methods According to the document of ISO/TC172/GW1 N80 about the test principle and the experimental demands of times-diffraction-imit factor M^2, beam diameters in different z places along the light direction were measured using LBA-300PC laser beam quality analyzing meter made in Spiricon Corporation of America. Hyperbolas were fitted utilizing the measured data.

根據(jù)ISO/TC172/SC9/WG1 N80文件對M^2因子的測量原理及要求国产对白放荡AV，用美國Spiricon公司生產(chǎn)的LBA-300PC激光束分析儀青草国产线免费观看AV，沿光傳播方向在不同z位置，測出光束寬度未满18勿入网站，由測量數(shù)據(jù)進行雙曲線擬合欧美三p，確定束腰直徑和遠場發(fā)射角，計算M^2因子欧美综合色一区二区三区。

It is widely used in the trade of mechanism, meter, electricity, light industry, college, research institute and measurement-inspecting department.

它廣泛應用于機制18岁禁看的黄片，儀表sesesese，電力，輕工国内自拍av偷500拍视频，高校91精品夜夜夜一区二区，研究機構(gòu)和測量，檢查部門的貿(mào)易日韩十八禁视频。

It was established in 1980, registered capital RMB 3.6 million yuan, occupying more than 5,800 square meter, the production capacity is RMB 15 million yuan, has the ability of engineering, product develop and manufacture mine crusher, the main product: PC series crusher, jaw crusher, roll crusher, line vibrate sieve, SH convert sieve,TD75一级黄色视频大片、TDII fixed belt conveyer, QD80 light belt conveyer, Y45 moving conveyer, DY mobile conveyer, elevator series, screw conveyer and vibrate feeder etc.

太原市北方機械廠創(chuàng)建于1980年，現(xiàn)有資產(chǎn)360萬元操美国美女，占地面積5800多平方米，年生產(chǎn)能力1500萬元搞那个黄色片来看一下，是一家集研究設(shè)計日本一区二区久久人妻高清、產(chǎn)品開發(fā)、加工制造為一體的礦山破碎機械廠2017av在线视频，主要產(chǎn)品有PC系列破碎機黄色一级国产视频、鄂式破碎機、輥式破碎機欧美一级精品日韩、系列直線振動篩级特大黄片视频影院春色、SH型回轉(zhuǎn)篩，TD75人人妻,人人操,人人爱人人乐、TDII型固定帶式輸送機鸥美性爱操逼视频、QD80輕型帶式輸送機、Y45移動式輸送機国产黄AV网站免费、DY移動式輸送機毛片一区二区三区四区播放、系列提升機、螺旋輸送機在线观看免费毛片高清、振動給料機等日韩天堂免费视频在线。

Light visible to the naked eye has wavelengths in the range of 400 to 700 nanometers, or billionths of a meter.

對肉眼睛來講可見光波長范圍在 400 到 700 毫微米之間，或十億分之一米黄色网站动。

A measure of the brightness or luminous intensity of light, usually expressed in units of Candelas per square meter (cd/m2) or foot Lamberts.

有點亮度或者發(fā)光的強度在光中中国区第一黄色网，通常在坎德拉每平方的單位表示米(cd/m 2)或者腳藍伯特。

Luminance 亮度 A measure of the brightness or luminous intensity of light, usually expressed in units of Candelas per square meter (cd/m2) or foot Lamberts.

有點亮度或者發(fā)光的強度在光中这里全是是精品99，通常在坎德拉每平方的單位表示米(cd/m 2)或者腳藍伯特美国黄色视频黄色视频聊天。

Luminance: The measured value of brightness; reflected light measure on motion picture screens as foot lamberts or candelas per square meter.

亮度：明亮度的測量值；電影銀幕上的反射光亮度量為每平方米多少個呎朗伯特或燭光單位三级黄色黄页网站。

One blade masks the pulldown while the other blade causes an additional light interruption increasing the flicker frequency to 48 cycles per second - a level that is not objectionable to the viewer at the recommended screen brightness of 16 footlamberts (55 candelas per square meter).

一旦一翼遮住光源唯美囗交视频系列全集，另一翼多產(chǎn)生一次光源中斷，使光閃爍頻率增加到每秒48次一区精品自拍偷拍。在銀幕亮度為16footlamberts(55燭光/平方米)時丝瓜视频成人无限看免费下载，觀察者覺察不到光閃爍国内主播直播在线观看。

Bennett a candle light vigil on behalf of units per square meter brightness 1 nit = 0.2919 foot-lambert.

尼特代表每平方米單位燭光的亮度1 nit=0.2919 foot-lambert 。