| peristaltic pump |
A peristaltic pump is a type of positive displacement pump used for pumping a variety of fluids. The fluid is contained within a flexible tube fitted inside a circular pump casing (though linear peristaltic pumps have been made). A rotor with a number of cams ('rollers', 'shoes' or 'wipers') attached to the external circumference compresses the flexible tube. ...
출처: en.wikipedia.org/wiki/Peristaltic_pump
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| period |
In rhetoric, a period is an unusually impressive, well-balanced, and stately sentence. Strictly speaking, a periodic sentence is a sentence whose opening clauses do not express a complete thought until the main clause, which typically comes at the end. The preceding clauses are often many, and exhibit parallel constructions and other rhetorical balancing devices. The overall effect should be of a slow sentence building to a climax. ...
출처: en.wikipedia.org/wiki/Period_(rhetoric)
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| peritrich |
The peritrichs are a large and distinctive group of ciliate protozoa. They are usually bell or disc shaped, with a prominent paroral membrane arising from the oral cavity and circling counter-clockwise around the anterior of the cell, accompanied by a smaller series of membranelles. The oral cavity is apical and funnel shaped, with a contractile vacuole discharging directly into it. When disturbed, the anterior of the cell can contract. ...
출처: en.wikipedia.org/wiki/Peritrich
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| Peritrichia |
The peritrichs are a large and distinctive group of ciliate protozoa. They are usually bell or disc shaped, with a prominent paroral membrane arising from the oral cavity and circling counter-clockwise around the anterior of the cell, accompanied by a smaller series of membranelles. The oral cavity is apical and funnel shaped, with a contractile vacuole discharging directly into it. When disturbed, the anterior of the cell can contract. ...
출처: en.wikipedia.org/wiki/Peritrichia
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| periodic table |
{| border="0" cellpadding="0" cellspacing="1" bordercolor="#ffffff" style="width: 100%;" align="center"! Group! 1! 2! 3! 4! 5! 6! 7! 8! 9! 10! 11! 12! 13! 14! 15! 16! 17! 18|- align="center"| ! I! II| colspan="10" | ! III! IV! V! VI! VII! VIII|- align="center"! Period| colspan="19" | |- align="center"! 1| style="background: rgb(160, 255, 160);" | hydrogen1H| colspan="16" | | style="background: rgb(192, 255, 255);" | helium2He|- align="center"! ...
출처: en.wikipedia.org/wiki/Periodic_table_(big)
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