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v*****r
发帖数: 2325 | 2 compared to tiger's downswing shoulder & arm triangle.
big difference.
my guess is that your driver is not very consistent in terms of
direction
and distance.
i have the same problem, right shoulder drop too quick during downswing
before impact, and shoulder/arm triangle does not look good. this means
impact 存在比较大的变数。 tiger's triangle is superb.
shoulder 已经到位到impact， arm 还没有到位. so it means a lot of
compensation.
ur hip turn is very large so ur shoulder turn is over 90degree, compared
to tiger'... 阅读全帖 |
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m**k
发帖数: 18660 | 3 haha.. I was thinking to say the same thing..
not sure what the last year longrun temperature..
but running under 90degree is insane
shape. |
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x***k
发帖数: 3311 | 4 This is how you test it:
In stores, hold one pole upside down and UNDER the plastic disc, look at your elbow, it should be 90degrees (parallel to the ground) from the pole to your body for all moutains.
Otherwise, (深藏而呼吸) is right: -1" from there.
Proud of you again (深藏而呼吸)!
发信人: shrily (深藏而呼吸), 信区: Ski
标 题: Re: 请问谁能给个自己现在用的pole长度?
发信站: BBS 未名空间站 (Wed Mar 18 20:37:12 2009)
哦，mogul是需要短一点的pole的啊， 好像有这个感觉 |
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x***k
发帖数: 3311 | 5 Subaru? Try turn the bars 90degree then you have the x-bars! Read your
manual. |
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x***k
发帖数: 3311 | 6 Subaru? Try turn the bars 90degree then you have the x-bars! Read your
manual. |
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x*d
发帖数: 1696 | 7 Yes, that is the major left-over problem. By having left hand on the throat,
it forces you to turn your shoulder more, and makes the stoke more powerful
and consistent.
Same thing I 'Dun Wu' in this summer -- It's almost always correct to force
left hand going together with right hand in the preparation stage of every
stroke, because it subsequently forces shoulder turn.
For example, forehand, left hand on throat until it reaches the 90degree to
the right, can add a lot of power and spin.
Ove... 阅读全帖 |
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l*****s
发帖数: 1754 | 9 今天烧了个24x24的softbox。叫娃抱狗照张试试。想法呢就是把人和狗都照清楚，背景
别太黑，闪光灯的痕迹不要太明显。
85mm f/1.8镜头@f/6.3(现在看来可能光圈还可以再大，可能f/5都能把两个照清楚）
shutter 1/100，iso8000
flash power, key=1/128 + 2/3 softbox, fill=1/128 umbrella, at 90degree to
key. I find putting fill at <180 will help wrap the light around.
这个背景太乱，居然把灯都反射出来了，出去背景乱以外，尽请黑面无情的拍。
还有两张不带狗的，f/2.2, 目的是看fill摆在哪,光怎么wrap。 |
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z*********e
发帖数: 10149 | 10 shoukdnt it be rotated 90degrees? |
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x*****o
发帖数: 28 | 11 多维空间角怎么定义？
两个n维向量(x1,x2,...,xn) (y1,y2,...,yn)之间夹角?
n维向量与一个超平面间夹角? (是否 90degree - 夹角(超平面法向量,n维向量)?)
高维空间与2/3-维有什么区别? Thanks!
在google上搜什么关键词,可以搜到相关信息?
high dimension angle? 搜到好多,稍微看了下,似乎很多没用..
谢谢！:)... |
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s*****c
发帖数: 753 | 12 First, you have to make sure |x|+|y|的最小值 is what you want, and you don't
want x^2+y^2的最小值.
If you do need "the slope that gives you the minimal distance sum", then:
For your two points P1(x1, y1), P2(x2, y2)
convert to polar coordinate system.
P1: (r1, t1), P2: (r2, t2)
where
x1=r1*cos(t1), y1=r1*sin(t1), x2=r2*cos(t2), y2=r2*sin(t2).
从原点到P1的线和从原点到P2的线有个夹角。范围从0到180.
如果夹角小于90， 你要的直线必定是两者之间。
let t2>t1, and t2-t1<90degrees
for the straight line you want y=k*x, or x=r*cos(t), y=r*sin(t). t1
I... 阅读全帖 |
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g****t
发帖数: 31659 | 13 因为不是点到直线的y方向距离和最小，所以在课本上不是很常见。
GooG: absolute least square
First, you have to make sure |x|+|y|的最小值 is what you want, and you don't
want x^2+y^2的最小值.
If you do need "the slope that gives you the minimal distance sum", then:
For your two points P1(x1, y1), P2(x2, y2)
convert to polar coordinate system.
P1: (r1, t1), P2: (r2, t2)
where
x1=r1*cos(t1), y1=r1*sin(t1), x2=r2*cos(t2), y2=r2*sin(t2).
从原点到P1的线和从原点到P2的线有个夹角。范围从0到180.
如果夹角小于90， 你要的直线必定是两者之间。
let t2>t1, and t2-t1<90degrees
for the straig... 阅读全帖 |
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y*******n
发帖数: 10103 | 14 我列几个摩托车的：
Honda CBR1000RR 2009
998cc I4
181 hp at 11500 rpm and 83.2 lb-ft at 8700 rpm,
Compression Ratio:12.3:1
BMEP：14.2bar
Yamaha YZF-R1
998cc I4
179.5 hp at 12500 rpm, 84.6 ft. lbs. (11.7 kg-m) @ 10000 rpm
Compression Ratio: 12.7:1
BMEP：14.4bar
APRILIA RSV4
998cc V4 60degree
180 HP (132 kW) at 12,500 rpm
115 Nm at 10,000 rpm
Compression ratio 12.8:1
BMEP：14.47bar
Ducati 1198R
1198cc V2 90degree
134.2 kW (180.0 bhp) @ 9750 rpm
99.1 ft·lbf (134 N·m) @ 7750 rpm
Compression ratio 12.8:1
BMEP：14. |
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y*******n
发帖数: 10103 | 15 我列几个摩托车的：
Honda CBR1000RR 2009
998cc I4
181 hp at 11500 rpm and 83.2 lb-ft at 8700 rpm,
Compression Ratio:12.3:1
BMEP：14.2bar
Yamaha YZF-R1
998cc I4
179.5 hp at 12500 rpm, 84.6 ft. lbs. (11.7 kg-m) @ 10000 rpm
Compression Ratio: 12.7:1
BMEP：14.4bar
APRILIA RSV4
998cc V4 60degree
180 HP (132 kW) at 12,500 rpm
115 Nm at 10,000 rpm
Compression ratio 12.8:1
BMEP：14.47bar
Ducati 1198R
1198cc V2 90degree
134.2 kW (180.0 bhp) @ 9750 rpm
99.1 ft·lbf (134 N·m) @ 7750 rpm
Compression ratio 12.8:1
BMEP：14.... 阅读全帖 |
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f*****i
发帖数: 3558 | 16 re.......
I read reviews. They all said that a so-so table saw (not contractor level
de) is similar to a circular saw + guide. But a table saw needs a relative
big workshop to accomendate it
Is Miter saw mainly for 45 angle cut on molding? If for 90degree cut,
circular saw can do it ya.....If no high requirement on accuracy and rarely
use, there is hand-saw that can cut angle.... |
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w*******y
发帖数: 60932 | 17 Craftsman 10'' Compound Miter Saw (21236):
http://www.mygofer.com/shc/s/p_10175_27151_00921236000P
through mygofer.com
Shows $69.99 on the item page
Select shipping as delivery method
Add it to your cart
sign in or register if you are not already registered.
If you had to register add a shipping address in the next cart window
A discount of 13.95 will show up in your cart
Add code FIXITUP for another 10% off makig the total discount $20.95
Final Price - $49.04
Currently $112.49 at Sears:
http:... 阅读全帖 |
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