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(241) We carried out with optimized tooth design calculated aims at minimum quality of transmission parts of planetary gear speed change mechanism, and at last we draw relevant data.

(242) In addition to patrol duty , blastboats are dispatched for planetary defense and interdiction missions.

(243) That's what NASA administrator Mike Griffin told an audience of researchers last week at the 39th Lunar and Planetary Conference in Texas.

(244) "We can study the meteorological cycle on another planetary body involving a different molecule (methane), " said Emily Schaller, of the University of Arizona's Lunar and Planetary Laboratory.

(245) The planetary treasure trove was found using an instrument called HARPS—short for High Accuracy Radial Velocity Planet Searcher—at the European Southern Observatory's La Silla facility in Chile.

(246) "Water salty enough to be liquid on Mars today is too salty for life, " planetary scientist Christopher McKay, with NASA's Ames Research Center in California, wrote in an email to Discovery News.

(247) While the planetary nebula phase is thought to last for around 10, 000 years, astronomers estimate the age of the outer filamentary portions of this halo to be 50, 000 to 90,(sentencedict.com) 000 years.

(248) Planetary nebulae fade away gradually over tens of thousands of years.

(249) Such a remarkable conclusion was foreshadowed by the French natural philosopher, Jean Baptiste Lamarck, who in 1800 had even less information about planetary dynamics than Vernadsky did.

(250) Go with a nice mix of Planetary Assault Carriers, Shock Troopers upgraded with Plasma Disc Launchers , Annihilator Tripods, and Devastator Warships.

(251) One of the fainter objects in Messier 's catalog, the Owl Nebula is a planetary nebula, the glowing gaseous envelope shed by a dying sun-like star as it runs out of nuclear fuel.

(252) A 2009 report issued by the Royal Society of London defines geoengineering as "the deliberate large-scale manipulation of the planetary environment to counteract anthropogenic climate change.

(253) A combination countershaft and planetary gear set transmission is provided that achieves at least nine forward speed ratios and two reverse speed ratios.

(254) The results show that the secondary flow appears in the flow of the power-law fluid in annulus with the inner cylinder executing a planetary motion.

(255) A helical planetary set reduces transmission noise level by up to 10 dB.

(256) Because of the limitations of the method for kinematic analysis and efficiency calculation of planetary gear trains(PGTs),(http://sentencedict.com/planetary.html) a graphic method was proposed.

(257) Besides, said electroplating guiding installation can be also equipped with a planetary stirring device, therefore its stirring effect is good, and the energy source can be saved.

(258) The results show that the secondary flow appears in the flow of the power-law fluid in annulus with the inner cylinder executing a planetary motion. The distribution of the secondary flow ...

(259) "Cassini will be able to measure the mass of the rings to a few percent," added NASA planetary scientist Jeff Cuzzi, with the Ames Research Center in Moffett Field, Calif.

(260) The feasible projects have been given utilizing the freedom transmission between the differential gear and the planetary gear.

(261) They show that a variety of processes were once at work on the surface of Vesta and provide extensive evidence for Vesta's planetary aspirations.

(262) It's an important step in uncovering the exact length of a Saturnian day, a conundrum that has perplexed planetary researchers for years.

(263) Reference efficiency of a pair of gear drive without planetary motion is the base to calculate efficiency of the whole planetary gear train.

(264) The principle straightness error of cutting square in work-pieces can be controlled by choosing a suitable pitch diameter of the planetary gear in the machine tools.

(265) Newton helped define the laws of gravity and planetary motion, co-founded the field of calculus, and explained laws of light and color, among many other discoveries.