Tungsten Trioxide Films
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- Category: Tungsten Information
- Published on Friday, 06 February 2015 17:09
- Written by cq
- Hits: 1686
Tungsten trioxide films material is a kind of wide application of functional materials, has the very broad application prospects. This material can be used in electrically induced discoloration electrochromics, smart Windows, etc. In different field of application of the film materials have different requirements.
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Yellow Tungsten Oxide Physical Property
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- Category: Tungsten Information
- Published on Friday, 06 February 2015 17:05
- Written by cq
- Hits: 1547
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Yellow Tungsten Oxide History
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- Category: Tungsten Information
- Published on Friday, 06 February 2015 17:00
- Written by cq
- Hits: 1660
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Throwing Dart Tips
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- Category: Tungsten Information
- Published on Friday, 06 February 2015 17:02
- Written by xsh
- Hits: 548
There are a number of basics to keep in-mind when you start throw dart. A steady Stance is very important. Don't lean way over the line to get closer to the board. This one is a tough habit for some people to beat, but to try, as leaning robs the darter of stability. The feet and legs should be positioned in a solid, comfortable, and relaxed stance, with weight distributed to both feet. Excessive leaning places nearly all of the body weight on one foot, tiring the shooter in long matches and damaging accuracy in the short run.
The few inches gained by leaning over the line are simply not worth the huge loss of balance and stability. Plus, leaning lowers the shoulder, forcing one to throw upwards, fighting gravity. Leaning also usually means tensing the major muscles of the body to preserve balance. This often results in a jerky release and poor follow-through, since the body is already off-balance.
A number of long-time players report back, knee, ankle, and foot pain, from spending many years standing on one foot while playing darts. Even in the short run, leaning to throw will cause minor pain in the small of the back. Especially for older players, a firm stance will stop this discomfort.
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Habits Sould Avoid
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- Category: Tungsten Information
- Published on Friday, 06 February 2015 16:57
- Written by xsh
- Hits: 557
Keep your feet planted solidly on the floor, and avoid lunging, rocking, or lifting the back foot off the floor during the dart toss.Imagine that you are bowling, you still must follow-through! The same applies to Golf, Billiards, Basketball, and most every other sport. Follow-through after releasing the dart, ending up with your fingers fully extended, as though touching the spot that you want to hit.
Leaning, or rocking, is often done in an attempt to get a harder throw. The dartboard really does not care how hard you throw the dart. The only important thing is how accurately you throw it.!
Even a light throw, if accompanied by a smooth and extended follow-through, will easily reach the dart board and score.
Such wasted motion can really be a bad habit, as it affects the entire body and throw. Lifting the foot even partway from the floor deprives the body of good balance during the crucial moment of follow-through. The strength required to reach the board with any normal dart is minimal, and for best accuracy should be provided only by the fingers, wrist, and forearm. After the dart leaves your hand, let your hand and arm continue on towards the dartboard, ending with full extension, and the fingers pointing at the target.
Missing the board or hitting too low often cause beginners to think that more power is needed. This is rarely true, as one can tell by the fact that the missed darts usually hit hard enough to stick in the wall, which is quite a bit harder than a bristle dartboard. The problem lies with the accuracy of the throw and follow through. Even small children can be taught to throw accurately without lunging or using the shoulders in a throw.
If you feel short of power, stand upright, and keep your elbow up. The upper arm should be approximately parallel to the ground. This allows you to bring your arm back further, without hitting yourself in the face with the dart!
Stand Straight, Elbow Up, and you will effectively double the power of your throw without any extra effort. For one thing, the dart is much higher than when leaning, so gravity does much of the work for you.
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