Van Nostrand's Engineering Magazine, 24권D. Van Nostrand, 1881 |
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18개의 결과 중 1 - 5개
137 페이지
... signals , employed for communicating be- tween H. M. ships at night , and for other purposes , are all suggestive of ancient practice , although more elaborate and perfect , and suited to modern require- ments . IN a recent trial it was ...
... signals , employed for communicating be- tween H. M. ships at night , and for other purposes , are all suggestive of ancient practice , although more elaborate and perfect , and suited to modern require- ments . IN a recent trial it was ...
138 페이지
... signals are and unstinted expenditure of time and generally wafted abroad , plainly indi- personal comfort . cating the presence of germ - laden gases , and silently bidding us beware . But the necessity for transmitting signals has ...
... signals are and unstinted expenditure of time and generally wafted abroad , plainly indi- personal comfort . cating the presence of germ - laden gases , and silently bidding us beware . But the necessity for transmitting signals has ...
139 페이지
... signal might especially be ander Beazeley ( who very ably treated of service , the sound is not likely to be this subject of coast fog - signals some obstructed in its passage . That the real years ago ) has termed " effective sound ...
... signal might especially be ander Beazeley ( who very ably treated of service , the sound is not likely to be this subject of coast fog - signals some obstructed in its passage . That the real years ago ) has termed " effective sound ...
140 페이지
... signals appear to be distinctive and easy ton , in carrying out his experiments , de- of comprehension , you will , I fear , still vised what he termed an artificial ear , by find very many people in the world , in- which the relative ...
... signals appear to be distinctive and easy ton , in carrying out his experiments , de- of comprehension , you will , I fear , still vised what he termed an artificial ear , by find very many people in the world , in- which the relative ...
141 페이지
... signals signals of different kinds are in practical to do duty at such times for the obscured operation : lights and hidden sea - marks , has brought about the development of a system of coast fog signals , in which development , 2. At ...
... signals signals of different kinds are in practical to do duty at such times for the obscured operation : lights and hidden sea - marks , has brought about the development of a system of coast fog signals , in which development , 2. At ...
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141 페이지 - ... (c) A sailing vessel under way shall sound, at intervals of not more than one minute, when on the starboard tack one blast, when on the port tack two blasts in succession, and when with the wind abaft the beam three blasts in succession.
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142 페이지 - A sailing ship under way shall make with her fog horn, at intervals of not more than two minutes, when on the starboard tack one blast, when on the port tack two blasts in succession, and when with the wind abaft the beam three blasts in succession. (c) A steam ship and a sailing ship when not under way shall, at intervals of not more than two minutes, ring the bell.
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