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Scientific American Supplement, No. 601, July 9, 1887电子书

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作       者:Various

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出版时间:2018-02-27

字       数:17.2万

所属分类: 教育 > 外语 > 实用英语

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The gunboat Eber is an improved vessel of the Wolf type, but differs from other vessels of its class in that it has not a complete iron hull, only the frame and deck beams being of iron, while the planking is of wood and yellow metal. No copper is used on the bottom. The "composite system" of building is looked upon with favor for ships of this kind, because iron vessels which are kept permanently at stations in the tropics soon become overgrown in spite of good care, and thus suffer a great loss of speed. In a wooden vessel the crew's quarters are better and more healthful than in iron vessels, for they are not as much affected by the temperature outside of the ship.
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THE FALKE TYPE TORPEDO BOAT.

THE GERMAN NAVY——THE NEW GUNBOAT EBER.

NEW BRITISH TORPEDO EXPERIMENTS.

AN ENGLISH CAR COUPLING.

MAGAZINE RIFLES.

PRESERVATIVE LIQUID.

KENT'S TORSION BALANCE.

LINK BELTING.

A NEW PROCESS OF CASTING IRON AND OTHER METALS UPON LACE, EMBROIDERIES, FERN LEAVES, AND OTHER COMBUSTIBLE MATERIALS.

RECENT PROGRESS IN GAS ENGINEERING.

THE NEW BRITISH COINAGE AND JUBILEE MEDAL.

BRICKS AND BRICKWORK.

PHENOMENA OF ALTERNATING CURRENTS.

PHOTOGRAPHIC STUDY OF STELLAR SPECTRA, HARVARD COLLEGE OBSERVATORY.

THE WINNER OF THE DERBY.

THE FALLS OF GAIRSOPPA.

SPONGES.

HERBET'S TEPID DOUCHE.

HOW TO MAKE A STAR FINDER.

THE SCIENTIFIC AMERICAN SUPPLEMENT.

PATENTS.

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