Acupuncture looks like a kind of very simple mechanical stimulation. Virtually, it has very complex congenerous physical and chemical effect.

针刺看似只是一种十分简单的机械刺激，但实质上，它却有着十分复杂的物理和化学协同的生理作用。

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Mecho-chemical effect is a new borderline subject that studies chemical change of the matter under mechanical action.

机械力化学效应是研究物质在机械力作用下引起的化学变化，是一门新兴的边缘学科。

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The study tries to divide enhancement effect into chemical effect and physical effect and recurs to inertial material to replace superfine slag powder.

本研究借助磨细惰性掺料等量替代矿渣微粉试图将矿渣微粉的增强效应分解为化学效应和物理效应。

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Researchers have spotted a never-before-seen chemical effect in Vincent Van Gogh's Flowers In A Blue Vase that is dulling the work's vibrant yellows.

BBC: Van Gogh's Flowers In A Blue Vase damage seen in X-rays

The knock-out effect of the chemical secreted in the honey-bee bite, known as 2-heptanone, was discovered as Dr Papachristoforou and colleagues observed bees dealing with pests.

BBC: Honey-bees found to have bite that stuns

Fabrizio Benedetti, professor of neurophysiology at the University of Turin Medical School, Italy, warned that dopamine may not be the only chemical involved with the placebo effect.

BBC: Placebo effect may be 'down to genes'