变色

Indolinospiropyran is a kind of photoresponsive compound, and it has attracted significant attention for its photoisomerization between two forms,excellent properties of fatigue counteraction.

吲哚啉螺吡喃是一种重要的光致变色化合物，由于具有良好的变色回复性、抗疲劳性而得到广泛的关注。

So it has become all-important to design and synthesize novel pyrazolone derivatives with excellent photochromic properties in the solid state and study the photochromic properties and photochromic mechanism.

因此设计并合成能够在固态发生光致变色的化合物，对其光化学性质、结构与性能之间关系的研究以及光致变色机理的探讨有着十分重要的意义。

In the invention, normal reversible absorbing transfer material for solar energy which are mixture of cobalt chloride and sextic methyl tetramine, phthalandione lipid compound and trilateral methane lactone compound, said material are produced to micro cachet that colour changes as stemp, changing reversely in normal temp, then said micro cachet are compounded with common white silicate cement to produce the invention cement base material.

本发明采用对太阳能呈常温可逆吸收转换材料：氯化钴与六次甲基四胺混合物、邻苯二甲酸酯类化合物和三芳甲烷内酯类化合物，将上述材料制成微胶囊，再将所制出的常温可逆温致变色微胶囊与普通白色硅酸盐水泥复合，即可制备出常温可逆温致变色水泥基材料。

Comparisons between the experimental and computational IR spectra clarify the difference of the open- and closed-ring isomers, which indicate that it is possible to identify the tautomeric form of this diarylethene derivative using a highly selective infrared absorption band and the strong absorption at 1 705 cm-1 of the ring-closed isomer can be used in non-destructive readout by IR light.

通过红外吸收光谱表征了该光致变色二芳基乙烯衍生物在溶液中开、关环前后结构的变化，并采用理论化学计算方法研究了该化合物开、关环异构体的红外吸收振动特性。光致变色异构化过程可以通过红外吸收光谱的变化而识别。关环异构体在1 705 cm

Mesoporous zincum sulfide materials have the unique character of photoelectricity, with nicer applying foreground in photocatalysis、photoconducting device、photochromic materials、electrechromic materials and so on .

硫化锌介孔材料具有独特的光电性质，在光催化、光电器件、光致变色材料、电致变色材料等方面展示良好的应用前景。

This is because a discoloring agent composed of a high polymer structure has been added to the clothing material.

热敏变色衣料颜色会随温度变化而不断变化，这是因为在衣料中添加了由高分子材料制成的变色剂。

This is because a discoloring agent has been added to the cloth cover , and when the temperature changes within a certain range , the high polymer structure in the discoloring agent changes and thus causes the change of color .

这是由于布面中加入了变色剂，当温度在一定范围内变化时，变色剂中的高分子结构发生改变，从而引起颜色的变化。

The colors of heat-sensitive discoloring clothing material will change continuously with changes in temperature.

热敏变色衣料颜色会随温度变化而不断变化，这是因为在衣料中添加了由高分子材料制成的变色剂。

Fog: Darkening or discoloring of a negative or print, or lightening or discoloring of a reversal material.

灰雾：底片或拷贝片变暗或变色，或者是反转片变亮或变色。

On the basis of atmospheric corrosion analysis and on the premise of unaltered originappearance of metal antiquity, a novel systematic technology of rust stabilized conversion and corrosioninhibition for archeological iron was developed in this thesis. Model occulted corrosion cell was used to studythe formation of bronze powder rust, its characteristics of pit corrosion and effect factors. The filmingtreatment of azoles composite corrosion inhibitors was used to prevent silver tarnishing, and its anti-tarnishingmechanism was proposed by measurement of electrochemical techniques and Surface-enhanced Ramanscattering.

在不改变文物原状的前提下，本文基于对金属质文物大气腐蚀过程的分析，发展了一种新的铁器文物表面锈层稳定转化与缓蚀保护的系统处理方法，用&模拟闭塞电池&的方法研究青铜器文物&粉状锈&的形成、点蚀特征和影响因素，采用唑系复合缓蚀剂成膜处理技术防止银器文物变色，利用电化学方法、SERS等方法研究并提出了唑系复合缓蚀剂防银变色的作用机理。

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％。