单词	plano-concave
释义	pla·no-con·cave (plā′nō-kŏn-kāv, -kŏnkāv′) adj. Flat on one side and concave on the other: a plano-concave lens. plano-concave Light rays disperse through a plano-concave lens.
随便看	saguaro Saguenay River Sagunto Sahaptian Sahaptin Sahara Saharan Saharanpur Sahel Sahelian sahib said saiga Saigon Saigon sail sailboard sailboarder sailboarding sailboat sailcloth sailfish sailing sail into sailor

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