Friction stir welding is a new solid state welding technique under the actions of mechanical forces and frictional heat. FSW has many advantages on the aspects of mechanical properties and producing efficiency, such as high strength, low defect, no pollution, etc. FSW can be used to join the buttcover plate and lap jointed sheeting of many materials, such as aluminium alloy, magnesium alloy, copper alloy, etc.

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Ajax was a man of giant stature,daring but slow.when the trojan war was about to break out he led his forces from salamis to join the greek army at aulis.as one of the trustiest champions of the greek cause,he was given thejob of guarding one end of the greek camp near troy.he was noted in the battlefield for his bravery and courage.after achilles'' death he became one of the two hot contestants for the dead hero''s shield and armour,the other being odysseus.when the weapons were finally judged to his rival,ajax went mad for grief.unable to get over the hardships,he took his own life.when,in order to seek the advice of,odysseus came to visit the lower world,the shade of ajax frowned uponhim.in the lower world ajax chose to be a lion,guided clearly by the bitter recollection of his former life.

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The reserves had time to join the main forces, and the runaways were stopped.

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It is the economic importance of China People's Republic of China in 1950, when the United Nations forces northward into the Yalu River to join in the war when one of the main reasons.

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We have also been reminded, in V-J Day observances last weekend, of the good that comes when men and women join together to combat the forces of tyranny and build a better world.

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