大约
- 与 大约 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
The high-resolution dispersion simulation results indicate that the air pollutants from Nuclear Power Plants 1 and 2 enter Taipei and reach the western basin after 2h with the concentration reduced to one-hundredth in the case of prevailing northeasterly wind.
在冬季东北风的个案(96/12/01),核一厂、核二厂的瞬间污染物大约在2小时后,即进入台北盆地到达西侧,此时浓度大约是初始浓度的百分之一。
-
By 1937 Zeiss listed about 20 high quality monocular, binocular and stereo microscope configurations in their literature. And they also marketed a wide selection of optional attachments and illuminators including at least 33 objectives of from 2X to 120X, and about 20 eyepieces of Huygens, Orthoscopic, and Compensating designs of from 3X to 30X.
1937年,蔡司文献上就已经有了大约20种高品质单目望远镜、双目望远镜和立体显微镜,并且还有很多可选的光学配件,说明书中列出了至少33种2倍到120倍物镜(其中包括6种为使用萤石型),至少大约20种3倍到30倍的惠更斯型,无畸变型(直线型Orthoscopic),和补偿型目镜。
-
F. for a period of time typically ranging from about 10 seconds to about one minute to form the desired passivate coating thereon.
时期典型地范围从大约10 秒对大约一分钟形成渴望钝化涂层thereon。
-
The second experiment is to fabricate white light LED from red and green phosphors pumped by blue light LED. The blue light LED we used in our experiment has the wavelength range between 450 and 452.5 nm, and the chip size is 17 mil *14 mil. There are two kinds white light LED we fabricated in the experiment. There are three blue light LED chips bonded in single package of both kinds package. The different of the both packages is mixed phosphor of encapsulation. One of the experimental devices was encapsulated YAG phosphor mixed silicone to fabricate white light. The other is red and green phosphor mixed encapsulation. The compared and focused parameter was luminous efficiency. YAG phosphor pumped white light has the luminous efficiency 72 lm/W, CRI 70, CIE(0.32, 0.33), CCT 5622°K at the operating current 60mA. On another hand, red and green phosphor pumped white light LED has the luminous efficiency 55 lm/W, CRI 90, CIE(0.31, 0.32), CCT 6479°K at the operating current 60mA. We fabricated the red and green phosphor pumped white light LED, and proved that it could has much higher CRI under similar compared conditions, CIE xy and CCT.
第二个实验是使用蓝光LED晶粒来制作白光元件,蓝光LED晶粒波段范围在450 ~ 452.5 nm,晶粒大小为17*14 mil,以三颗蓝光LED晶粒搭配YAG萤光粉(黄绿光 540 nm)制成白光元件,再以另外三颗蓝光LED晶粒搭配红色萤光粉(613 nm)混合绿色萤光粉(519 nm)制成的白光元件进行发光效率比较;搭配YAG萤光粉的白光元件在注入60 mA的电流时所量测到最大的发光效率是在72 lm/W,演色性数值大约为70,CIE色度座标为(0.32, 0.33),色温是在5622 °K;而搭配红色萤光粉混合绿色萤光粉的白光元件在注入60 mA的电流时,最大的发光效率在55 lm/W,演色性数值大约为90,CIE色度座标为(0.31, 0.32),色温在6479 °K;证明了蓝光LED晶粒搭配红色萤光粉混合绿色萤光的白光元件演色性指数可以高达90 以上的结果。
-
The results of the second study comparing thermal platemaking to solvent platemaking for flexo indicate that thermal imaging results in a reduction in non-renewable energy of approximately 60 percent and a reduction in greenhouse gas emissions of approximately 51 percent.
结果第二项研究比较热溶剂制版的制版柔印表明,热成像结果减少了不可再生能源的大约百分之六十和减少温室气体排放量的大约百分之五十一。
-
Quantity of heat having 9 calories approximately among one gram of oil,; Quantity of heat having 4 calories one gram approximately in proteide,; By contrast, only have 4 calories of quantity of heat also right away among one gram of Steamed Rice.
调查发现,一克油中,大约有9卡路里的热量;一克蛋白质中,大约有4卡路里的热量;相比之下,一克米饭中,也就只有4卡路里的热量。
-
Residents in the region around the historic hill town of Ziarat, about 50 kilometres (30 miles) north of the provincial capital Quetta, told him about 6,000 people have been displaced.
在离省会基达北面大约50千米(30英里)的地方的历史山城Ziarat附近区域的居民告诉他大约有6,000人已经撤离。
-
Variations of radiolarian abundance, biogenic opal, organic carbon and grain size in this core indicate t...
该柱放射虫丰度、生源蛋白石和有机碳含量、粒度的分析显示,大约在氧同位素11、9~8.4、5~3和1期,高的放射虫总丰度、第四纪常见种丰度和始新世-渐新世种丰度大致对应于高的中值粒径和平均粒径,以及大约氧同位素5期以来增加的有机碳含量,表明此期间贸易风增强,搬运的陆源颗粒增大,北赤道洋流加强,导致上升流增强,表层水生产力提高,同时,南极底层流的活动也加强。
-
About 7,700 former workers were overpaid while about 12,800 were underpaid, according to the wire service. The final tally will be announced after a recalculation is completed.
据美联社报道,大约有7700名的前安然雇员获得了超额的补偿金,而大约12800人低于标准,最终的统计数据将在复核工作完成后对外公布。
-
Combined with the vacuum harvesting device, it could automatically concentrate 350-liter of the rotifer culture with a density of about 250 rotifers/ml to about 15,000 rotifers/ml in less than 13 minutes.
结合真空收获装置与滚筒过滤机而成的自动化系统可以在13分钟内将350公升的轮虫由密度大约250/ml浓缩到大约15,000/ml。
- 推荐网络例句
-
However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.
然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。
-
Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.
镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。
-
A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.
付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。