查询词典 wide-angle lens

As substitute for fluorite lens, a double-layer DOE is used in a long focal-length apochromatic objective lens. The modulation transfer function of this hybrid optical system is suggested for evaluating diffraction efficiency of the multilayer DOE. The results show the diffraction efficiency has a wide and symmetrical distribution in the whole waveband.

利用双层衍射光学元件替代萤石透镜校正混合光学系统的二级光谱，设计并制作了一套长焦距物镜，并利用系统调制传递函数评价了多层衍射光学元件衍射效率，测试结果表明衍射效率在整个设计波段内以较高的数值平均分布。

According to model, lead zinc ore bodies of mineral deposit, celestite ore bodies and gypsum ore bodies are distributed by the incomplete dome shape. The sandstone type ore bodies like a curved surface shape, is on the top, wide distribution, which like the top cover of a mushroom. The limestone breccia type ore bodies, under the sandstone type ore bodies, with mostly irregular vein shape, lens body shape, locate at the root of the mushroom. Gypsum and celestite ore bodies, accompanying with limestone breccia type ore bodies with the shape of vein, lens body, distribute under the sandstone type ore bodies.

根据模型显示，金顶矿床铅锌矿体、天青石矿体和石膏矿体呈不完整的穹隆状分布，砂岩型矿体在上，为曲面状，分布广，似一蘑菇的顶盖，而灰岩角砾岩型矿体分布局限，部分产于砂岩型矿体之下，多为不规则的脉状、透镜体状，构成蘑菇的根部；石膏和天青石矿体主要与灰岩角砾型矿体相伴产出，呈脉状、透镜体状，多分布于砂岩型矿体下部。

The unsuspecting photographer focuses with the lens wide open to place the circle of least confusion at the sensor position b, and, taking the actual picture at a reduced aperture, he is unaware of the ensuing focus shift that prevents him from getting the best out of the lens.

一个经常使用全孔径来拍摄的摄影师会毫不犹豫地把胶片放在B点，但是如果他不改变胶片的位置，当他使用小光圈的时候，事实上，他就不可能充分利用这个镜头拍到最好的照片了。

To improve the imaging quality of CCD camera and make the lens small in size,compact in structure,the wide field of view optical lens with the standard quadric surface and even aspheric surface was designed.

为提高CCD摄像机的成像质量，同时使镜头结构紧凑、小型化，在大视场光学镜头的设计中，引入标准二次曲面和偶次非球面。

Celiac lens gallbladder is excised is to be in lens of TV abdominal cavity is orthoptic below, use special weapon or enter through celiac wall small cut cystic resection applies inside abdominal cavity, do not have a stomach, scar is little, anguish is small, complication is little, operation time is short, restore to wait for an advantage quickly, now already by clinical and wide application.

梗概： 腹腔镜胆囊切除是在电视腹腔镜直视下，利用非凡器械或通过腹壁小切口进入腹腔内施行胆囊切除术，具有不开腹，创伤小，痛苦小，并发症少，手术时间短，恢复快等优点，现已被临床广泛应用。

The twin-lens kit gives first-time users loads of flexibility too, with an excellent Zuiko 14-45mm f/3.5-5.6 wide zoom lens and a Zuiko 40-150mm f/4.5-5.6 telephoto zoom lens.

双镜头套件，让第一次使用的用户负载的灵活性，也与一个很好的zuiko 14 -四十五毫米f/3.5-5.6广泛的变焦镜头和一个zuiko 40 - 150毫米f/4.5-5.6镜头的远摄变焦镜头。

However, due to the wide 28mm lens of the S90, 67mm wide lenses will vignette.

不过，由于S90本身就是28MM的广角了，所以，67mm的广角镜头会产生虚光。

And Technology, Changchun 130022, ChinaAbstract : The optical design of wide spectrum WFOV LLL collimating lens and the structure of lens set are introduced. The correction of the secondary spectrum of the WFOV LLL collimating lens are described emphatically.

介绍宽光谱大视场微光准直镜的光学设计和镜组结构方案，侧重叙述大视场微光准直镜的二级光谱校正方法。

Our company offers you a very wide range of optical lenses, including spherical lenses, cylindrical lenses, aspherical lenses, windows, prisms, crystal, mirrors and high precision optical samples etc. In addition, we specilize in customizing photographic lenses and accessories, such as telephoto lens, projector lens, fisheye lens etc.

我们公司为您提供了非常广泛的光学镜头，包括球面镜片，圆柱镜头，片非球面镜片，窗户，棱镜，晶体，镜子和高精密光学样品等此外，我们在定制specilize摄影镜头和配件，如远摄镜头，投影镜头，鱼眼镜头， etc。

The Fisheye FIX Wide Air Lens designed specifically for the WP-DC34 offers 100 degrees of coverage, but the bungee attachment system feels a little awkward.

Fisheye FIX Wide Air Lens广角是专门为了WP-DC34潜水壳设计的，能提供100度的广角。不过这个广角镜是用橡筋固定在潜水壳上的，这个固定方式感觉上很古怪。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。