• a useful player
  • うまい選手
  • the useful arts
  • 手芸,工芸
  • useful information [tips, hints]
  • 有益な情報[こつ,ヒント]
  • useful work
  • 実質的な仕事
  • A useful comparison is the Bohr model of the hydrogen atom, which was considered implausible from its inception, even by its creator, yet led the way to the ultimately correct theory of quantum mechanics.
  • Wikipedia: Cyclol
  • Alternatively, one useful simplification of the metabolic modelling problem is to ignore the underlying enzyme kinetics and only rely on information about the reaction network's stoichiometry, a technique called flux balance analysis.
  • Wikipedia: Enzyme kinetics
  • Another useful constant is kcat, which is the number of substrate molecules handled by one active site per second.
  • Wikipedia: Enzyme
  • Another useful feature is a large whitish panel on the underwing.
  • Wikipedia: Zino's Petrel
  • At one time, the island was considered an arid location, where coconuts were the only useful plants likely to flourish and vegetables were difficult to produce.
  • Wikipedia: Carabane
  • Due to the limited circulation of the Eisenhower dollar, it was decided in the 1970s that a smaller dollar coin might prove more useful to the public.
  • Wikipedia: Sacagawea dollar
  • Following the invention of the laser in 1960, laser beam welding debuted several decades later, and has proved to be especially useful in high-speed, automated welding.
  • Wikipedia: Welding
  • Germanium is useful for monochromators for beamlines used in single crystal neutron scattering and synchrotron X-ray diffraction.
  • Wikipedia: Germanium
  • Her long tail is often bent from the cramped nest space and is a useful field indicator of nesting.
  • Wikipedia: Red-winged Fairywren
  • IgG, by contrast, remains detectable for over 60 years and, in the absence of symptoms, is a useful indicator of past infection.
  • Wikipedia: Dengue fever
  • Immunohistochemistry is useful in the diagnosis and may be used to help differentiate a cholangiocarcinoma from, hepatocellular carcinoma and metastasis of other gastrointestinal tumors.
  • Wikipedia: Cholangiocarcinoma
  • In 1904, Alberto Santos-Dumont, an early aviator, asked his friend, a French watchmaker called Louis Cartier, to design a watch that could be useful during his flights.
  • Wikipedia: History of timekeeping devices
  • In military usage, a gun is a cannon with a high muzzle velocity and a flat trajectory, useful for hitting the sides of targets such as walls, as opposed to howitzers or mortars, which have lower muzzle velocities, and fire indirectly, lobbing shells up and over obstacles to hit the target from above.
  • Wikipedia: Cannon
  • Isotachs are particularly useful in diagnosing the location of the jet stream on upper level constant pressure charts, and are usually located at or above the 300 hPa level.
  • Wikipedia: Wind
  • It has proven so useful that a follow-on mission, the Solar Dynamics Observatory, was launched in February 2010.
  • Wikipedia: Sun
  • It is most useful for communication between animals that rarely encounter each other.
  • Wikipedia: Lemur
  • It was particularly useful for Bird, with his severe rheumatism, as he could apply the stethoscope to the patient from a seated position.
  • Wikipedia: Golding Bird
  • Legendary material, such as that in hagiography or later medieval sources such as John of Fordun or Andrew of Wyntoun, is not generally regarded as useful beyond its limited potential for cleanly preserving earlier source material.
  • Wikipedia: Siward, Earl of Northumbria
  • Logarithmic scales are useful for quantifying the relative change of a value as opposed to its absolute difference.
  • Wikipedia: Logarithm
  • Minimizing the number of reaction steps and amount of reactive chemicals used leads to a cost-effective and industrially useful reaction.
  • Wikipedia: Aldol reaction
  • Missing from this edition is the useful biographical material contained in the 1891 Johnson and Blaine editions.
  • Wikipedia: William Tecumseh Sherman
  • Neutron penetration into materials makes californium useful in detection instruments such as fuel rod scanners; neutron radiography of aircraft and weapons components to detect corrosion, bad welds, cracks and trapped moisture; and in portable metal detectors.
  • Wikipedia: Californium