g**1
发帖数: 10330 | 1 'If you see somebody do that get out of the way': Dr. Fauci tells
coronavirus briefing that a 'very robust, vigorous' sneeze CAN travel 27
feet
Coronavirus task force Dr. Anthony Fauci was asked about an MIT study that
said sneeze droplets could travel beyond the 6ft in social distancing
guidelines
In the study, Lydia Bourouiba, Ph.D., an associate professor, wrote that a
sneeze consists of several phases of rocky wind that can carry droplets
forward
Dr. Fauci said Tuesday in a briefing: 'If yo... 阅读全帖 |
|
|
t******n
发帖数: 320 | 3 只要不是直接喷射 小分子布朗运动扩散不会快于人走路速度 |
|
|
|
c****t
发帖数: 120 | 6 这里屋子都是方顶。
想把living room天花板作成圆顶。hd, lowe看了一圈。没发现啥办法。
怎么搞？
living room不是正方的。是14ftX27ft的长方。由于窗户在27ft的一边，电视只能放在
短的一侧。如果沙发放另外的短一侧，那看电视就太远了。可沙发放中间，那另外一半
放啥？ |
|
|
|
k*****n
发帖数: 458 | 9 1 yard = 3 ft
1 yard^3 = 27 ft^3
your are correct.
mostly when your order concrete, just tell them the L*H*D, they will
calculate for you. and they will sent a little extra |
|
a***8
发帖数: 2433 | 10 yes, y peaks at 4.2ft when travels 27ft into the court, 12ft from the
net.
angle is arctg(y'/x') @ t=0 ya... |
|
d**w
发帖数: 2474 | 11 买这个，已经开始take订单了。。。
Cost: $200,000
Length: 19ft
Width: 5ft 6ins when wings are folded, 27ft when they're open
Top speed on the road: 65mph
Top speed in the air: 115mph
Range in the air: 500 miles on one 20-gallon tank of fuel
Power: 100hp four-stroke engine
慢了点儿！！！ |
|
v*******l
发帖数: 5042 | 12 来自主题: _Fly_Fishing_Club版 - 接着烧…… 线已经配好，只等实战……
一直在徘徊，配何种线？主要是在skagit shooting head 和windcutter之间徘徊。前
者在北美更流行一些，是用grain来和杆子的号数相配；后者则有和杆子一样的号数；
windcutter with tips，配有5根不同sink rate的tip，线的belly部分较长，价格本地
为$179+tax，约200刀。
而Skagit的连接关系是：
背线---〉running line(level flaoting飞线)---〉Skagit shooting head--->tips(
sink, floating etc)--->leader
由于我自己已经有running line（100尺），也可以自己制作的各种sink rate的Tips(8
、11、14号各单买sink线，大约10尺就够了，$0.5--$0.8一尺，比较便宜)，因此最终
选择了skagit风格。买了skagit shooting head line(27ft, 650grain )，以及Taped
floating Tip，其它自己搞的。比windcutter能节省 |
|
c*********t
发帖数: 1861 | 13 那天水位是3.27FT，大概只有 I-II级，属于技术漂。。。4－6FT差不多II-III级属于快乐漂。。。8-10 FT可是恐怖的大洪水，属于表命漂了(-:
10FT。 |
|
