Cut-thread taps are threaded to size before hardening; ground-thread taps are finish-threaded after hardening.
As the roads of the time could not handle the weight during summer, transport had to wait until winter when the frost had hardened the ground.
Workers are injecting chemicals to harden the ground on the seaside of the Fukushima reactor buildings to prevent contaminated water from flowing out to the ocean.
You want to plant the bulbs before the first deep frost, which hardens the grounds and makes it much more difficult to dig holes for the bulbs.
As these worthies exhort their charges, it's easy to imagine them all astride wheeling horses on some military parade ground, hardening their regiments for the long campaigns of autumn.
As a result, a higher degree of strain hardening with the ground surface reduced the rubbery or adhesive behavior and improved surface finish after grinding, although a large amount of smearing areas remained.
As attitudes harden, the middle ground is being swept away in tide of bloodshed.
AS the ground hardens and squirrels do double axels on the frozen birdbath, I face another New England winter with a certain degree of pride in my suburban sang-froid.
You might, for example, find yourself in the Herbology classroom, having to harden bits of ground to stop encroaching elves from stealing Golden Galleons, or in the library, flicking Stun spells at attacking wizards.
But we could even take World Peace at his word that he had no intention of knocking Harden to the ground, hitting him in the head, and potentially putting his career or life in jeopardy, and still condemn the act as dangerous.
But she warned heavy rain falling in short periods on ground hardened by the heatwave could lead to localised flooding.
