晶体

The continuous ultraviolet laser with 351 nm wavelength was focused on the -z surface of nearly-stoichiometric LiTaO3, and the homogeneous electric field which was antiparallel to the direction of spontaneous polarization was applied simultaneously.

波长为351 nm的连续紫外激光被聚焦在近化学计量比钽酸锂晶体的-z表面，同时沿与晶体自发极化相反的方向施加均匀外电场。

So the Poynting vector and wave vector are antiparallel, consequently, the light is refracted negatively, and also there are many other unusual behaviors in LHM like reverse Cerenkov radiation, contrary Doppler effect etc.

所以近年来有关左手材料的研究受到了广泛的关注。2002年，科学家们发现当光波以一定角度入射到在光子晶体界面上时，光波在光子晶体中的传输也会出现和在左手材料中相同的现象：比如负折射和超透镜现象。

Silicon oil fit-into anterior chamber: two crystal eyes, intraocular tension has been controlled by releasing silicon oil , silicon oil fit-into one eye again, silicon oil filling exceed one month, useless of expectant treatment, after checking the reattachment of retina, doing the silicon oil dislodge from anterior chamber and vitreous cavity; there aphakia eyes by prone position and draping hypotensive drug: two iris ambitus excision aperture membrane occlusor eyes by lasering at 6 clock or perforating again., iris ambitus excision at 6 clock by lasing .one by iris ambitus excision affiliation anterior chamber plasty, acuity of vision has been elevated different degree after intraocular tension controlled.

硅油进入前房者：有晶体眼中2眼经前房放油眼压控制，其中1眼硅油再次进入前房，硅油填充亦超过1个月，经保守治疗无效，检查眼底视网膜复位后，同时行前房和玻璃体腔硅油取出术；无晶体眼中3眼经俯卧位加点降眼压药物，眼压控制，2眼虹膜周切孔膜闭者经过激光6点位打孔或重复打孔处理眼压控制，1眼作6点位周切孔重建，1眼行虹膜周切联合前房成形术，眼压控制。96眼眼压控制后，视力均有不同程度提高。

Objective To explore the effects of intraocular lens implantation for aphakic eyes after vitrectomy.

目的 探讨对玻璃体切割术后无晶体眼进行二期人工晶体植入的安全有效的方法。

Methods 15 of 48 aphakic eyes are implanted IOL through a clear corneal tunnel incision, others are fixed IOL under irrigation into vitreous cavity.

对48例此类患者中15例周边囊膜保留良好者行透明角膜隧道切口植入三片式可折叠人工晶体，余33例在后房灌注下缝线固定人工晶体。

One hundred seventy-seven eyes of 161 patients consecutive who had corneal edema resulting from Fuchs endothelial dystrophy, pseudophakic bullous keratopathy, aphakic bullous keratopathy, failed graft or iridocorneal endothelial syndrome.

连续的161位患者的177只眼，都有角膜水肿。病因分别为FUCHS角膜内皮营养不良，人工晶体眼大泡性角膜病变，无晶体眼大泡性角膜病变，移植术失败和虹膜角膜内皮综合征。

The apophyllite crystals from Huangshi of Hubei Province and Punna of India are studied by means of conventional gemmological methods, EMPA and LRM, including the crystal characteristics, chemical compositions and inclusions.

以湖北黄石与印度浦那鱼眼石晶体为研究对象，采用宝石学常规仪器、电子探针、激光拉曼光谱仪对比分析了两者的晶体特征、化学成分和包裹体等。

The infrared spectra and Raman spectra were measured at room temperature , and the assignation of the vibrations was discussed.

Nd ， NYW 晶体具有吸收峰宽、阀值低、增益大和效率高的优点，是一种有良好应用前景的激光晶体 [4] 。

The results showed that glass transition temperature and crystallization peak temperature of the ceramics changed little with the increasing value of the ratio, but its phase composition changed greatly, i.e., from augite to diopside with grain size gradually decreased and crystals uniformly distributed.

结果表明：随着w/w(SiO2)比值的增加，玻璃的转变温度和析晶峰温度变化较小，但微晶玻璃的物相组成发生较大变化，由普通辉石转变为透辉石，微晶玻璃内部的晶体尺寸逐渐减小，晶体分布相对均匀；微晶玻璃的弯曲强度逐渐增加。

Under the electron microscope, it is revealed that the kaolinite crystals are low automorphic and distinctly corroded, the halloysite crystals are mostly in shapes of tube, rod and tabular-flake, and illites are in ultramicrograin aggregate.

电子显微镜下，高岭石的晶体自形程度差溶蚀现象显著（普遍形成港湾状、浑圆状）；埃洛石晶体多呈管状、棒状以及板片状；伊利石呈超微细颗粒集合体（不规则的鳞片状、浑圆状及板条状等）。

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％。