变色

With the coordinated interacton of the abrasive particles in dentifrice, can it abrade or corrode dental restorations made from titanium and change their luster and color so as to influence their appearance and long-term use.

含氟牙膏中一般含有氟化钠或单氟磷酸钠，pH值低于7，在摩擦剂的协同作用下是否对口腔中钛制修复体有磨损和腐蚀作用，使其发生失泽和变色，以致影响它的美观和长期使用？

And there was a flash at the center of the demonic horde, at the center where the casters chanted andscreamed and prayed. It was a rip in the universe, this time a bright rip, as if a doorway into the sun itselfhad been opened. The energy spiraled outward, and the demons did not even have time to scream as itovertook them, burning them out and leaving the shadows of their afterimage as their only testament.

守护者的魔法率先发动，恶魔群中央闪出耀眼的光芒，如太阳般刺眼的光芒令人无法正视，一时间天地为之变色；石破天惊的爆炸紧接而至，毁灭性的冲击波和炙热的空气横扫整片山谷。

Contain the hyacinth bean of many black glucoside and corpuscular agglutinin and kidney bean, when edible must squashy become angry

含有大量的皂甙和血球凝集素的扁豆和四季豆，食用时一定要熟透变色

Alexandrite is a chrysoberyl mineral, and it is the only naturally color changing stone.

金绿宝石是一种矿物，它是唯一的自然变色石。

Fourth, color liquid crystal materials: use of temperature and angle of deviation of a rainbow color change.

四、 液晶变色材料：利用温度和角度差呈现彩虹之颜色变化。

The anole did not want to go into the mirrored box.

变色蜥蜴不愿进入镜箱。

Although I performed this experiment, I place very little confidence in my own results for the following important reasons: the lizard I used was not a true chameleon, but an anole, a species with a far more limited range of color adaptation than a true chameleon.

尽管我完成了这个实验，但我对实验的结果却信心不足，因为有如下一些重要的原因：我用的不是真正的变色龙，而是一条变色蜥蜴，它拥有的色谱比真变色龙少多了。

Finally, there is this observer problem: I can only see the lizard when my face is peeking into the mirrored box, an act which inserts a blue eye and red nose into the anole's universe, a disturbance I could not circumvent.

最后一点与观察员有关：想看到蜥蜴，我只有把脸贴近镜屋，这种在变色蜥蜴的地盘插入蓝眼睛和红鼻子的行为，其骚扰作用是不容回避的。

The heat-chromism was studied and the reaction mechanism was presented according to electron paramagnetic resonance spectrum and Fourier transform-infrared spectroscopy.

研究了它们的热致变色行为，并根据红外光谱和电子自旋共振谱提出了不可逆热致变色的反应机理。4。

Finally, N ethey[3,3 dimethyl spiralindoline naphthoxazine]was synthesized by the addition of 1 nitroso 2 naphthol also,the photochromic mechanism of the substance and its photochromic phenomenon in ethanol were studied.

报道了以苯肼和 3 甲基 2 丁酮为原料首先合成 2 ，3 ，3 三甲基吲哚，吲哚再与碘乙烷亲核取代，碱化得费舍尔碱，最后与 1 亚硝基 2 萘酚作用合成N 乙基 [3 ，3 二甲基螺吲哚啉萘并恶嗪 ]的全过程，并研究了该物质的变色机理以及在乙醇溶剂中的光致变色现

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％。