变色

Mainly be applicable to and arrange tidy, the lightly mid-degree tooth body of quality integrity changes countenance, whole the tooth light degree arrive mid-degree fluorine spot tooth, whole the tooth light degree four wreaths plain tooths, individual the tooth changes countenance, because the age increases the tooth color that the dentine change causes and delivers Huang and wants to become more white healthy buff tooth, heavy degree four wreaths plain tooth enamels sticks a noodles creation the bleach of front can make and whet in addition to of tooth quantity decrease, the effect is better.

主要适用於排列整齐、质地完整的轻中度牙体变色、全口牙齿轻度到中度氟斑牙、全口牙齿轻度四环素牙、个别牙齿变色、因年龄增长牙质改变引起的牙色发黄，想变得更白的健康浅黄色牙齿、重度四环素牙瓷贴面制作前的漂白可以使磨除的牙齿量减少，效果更佳。

The electrochromic performance of the laterally configured ECD was characterized by in-situ UV-Vis spectroscopy. P3MeT ECD shows blue-red reversible changes, and PANI-ECD shows darkgreen-yellowgreen reversible changes.

采用电化学现场紫外-可见光谱法研究了侧面结构固态ECD的电致变色特性， P3MeT-ECD显示出蓝色和红色的可逆变化， PANI-ECD显示出墨绿色和黄绿色的可逆变化，同时采用P3MeT和PANI作变色材料的P3MeT-PANI-ECD可以实现红、蓝、墨绿和草绿多色变化。

All process factors that influence the composite thermochomic materials including the molar ratio of ester to water, pH value, reaction temperature, aging temperature, the dosage of thermochomic materials were carefully researched to have successfully acquired the optimal formulation.

重点研究了制备工艺各因素如酯水摩尔比、pH值、反应温度、陈化温度和变色材料用量等对热敏变色复合材料的影响，得出最佳工艺。

By contrasted with silica gel, the corn hull desiccants by hydrolyzation method and heat treatment method have advantages as stabilization on moisture adsorption, less water of reversible adsorption and high moisture adsorption ratio in high humidity. These desiccants have disadvantages as lower moisture ratio than silica gel in low humidity and slower moisture adsorption speed than silica gel. The corn hull desiccant by derivation method has advantages as high moisture adsorption ratio, high moisture adsorption speed, stabilization on moisture adsorption and hardly any water of reversible adsorption.

通过与变色硅胶干燥剂的对比，通过水解法和热处理法得到的玉米渣皮干燥剂的优点是吸水稳定，可逆吸附水少，在高湿度下吸水率高，不足是在较低的湿度下，吸水率比变色硅胶干燥剂略低，吸水速度比硅胶慢；通过衍生方法得到的玉米渣皮干燥剂的优点是吸水率高，吸水速度快，吸湿稳定持久，几乎不含可逆吸附水，不足是再生后产品容易结块。

Results: Haemoglobin and haematin were detected in the dentinal tubules of discolored teeth from group A and no evidence of ferric or haemosiderin. Specimens from group B demonstrated a negative response to histochemical tests.

组织化学实验结果显示：变色牙牙本质小管内存在高铁血红素和血红蛋白，缺乏铁离子和含铁血黄素：漂白后的牙本质小管内未见任何红细胞的分解产物。B组变色牙漂白4周后染色均消失，牙齿颜色恢复正常。

The chromic processes and photochromic properties of the pigments may caused by the equilibrium changes in the ratio of azo-hydrazone tautomers.

上述偶氮染料共轭环扩大后，其碱性DMF稀溶液在红外灯光的照射下发生了变色现象，本文对其变色机理进行了探讨。

When the shallots start to change color, add grape and mix. Cook until the grape starts to soften, add radicchio. When radicchio starts to change color, add pork and mix. When pork turns white, add 30cc of white wine and cover. Simmer with low fire for ten minutes or so, and it'll be ready to be served.

待葡萄开始变软出汁，加入切好的红生菜略拌，等红生菜开始变色以后，加入切成拇指大小的猪肉条，略为拌炒，待猪肉表面变色以后，加入约30cc的葡萄酒和一小匙盐，盖起来用小火闷煮约十分钟，就可以上菜了。

In this research, tungsten trioxide as a photochromic material had been synthesized and WO3/PAA hybrid films were prepared by blending method. UV light was employed as the energy source for the photochromic reaction of the material in order to perform the NIR absorption.

中文摘要本研究成功制备三氧化钨光致变色材料，利用有机无机混掺法将三氧化钨与聚丙烯酸混掺成膜，藉由紫外光作为变色反应的驱动力，达到吸收近红外光效果。

Tungsten powder and H2O2 are used as main starting materials to prepare nano structure d tungsten trioxide films with Pd catalyst by sol-gel technique and spin coating method.

以钨粉和双氧水为原料，采用溶胶-凝胶技术结合提拉镀膜法，制备了纳米结构掺钯气致变色WO3薄膜；分析了薄膜的折射率、厚度、结晶度、红外特性和表面形貌随温度变化特性；研究了薄膜的气致变色性能。

Silver electroplating of beryllium bronze with thiosulfate was used to replace conventional toxic silver plating with cyanide in accordance of the characteristics of the beryllium bronze .

从分析铍青铜材料的特殊性入手，针对性地采取有效的前处理工艺措施，以硫代硫酸盐镀银取代传统的有毒的氰化镀银，分析了银镀层变色的原因并提出了相应的抗变色处理措施。

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％。