#国家宝藏# 贾湖骨笛距今7800-9000年，它的横空出世改写了整部中国音乐史。它是迄今为止中国考古发现的最古老的乐器，也是世界上最早的可吹奏乐器。The Jiahu Bone Flute is the oldest known musical instrument from China, dating back to around 7000 BC. It is made from the ulnae of the red-crowned crane (Grus japonensis Millen) and has 5, 6, 7 or 8 holes. The best preserved flute has been played and tonally analyzed.

Machine nut taps
Machine nut taps for through holes
for thread depth up to 1.0xD
Nut taps for unalloyed and low alloyed steel
for tapping of non abrasive materials
Trapezoidal nut taps up to Tr 36x6 for right- and left-hand threads
for metric threads up to M 24 with long reduced shank to allow nuts to run over

陆上行舟，飞人梦游
The evolution of the boat!

01.
郑宏祥：《停滞的梦》 | 布面油画 | 150 x 200cm | 2014年
Zheng Hong Xiang: Stagnant Dreams | Oil on canvas | 150 x 200cm | 2014

02.
郑宏祥：《月圆》 | 布面油画、雕花画框 | 90 x 90cm | 2013年
Zheng Hong Xiang: Full Moon | Oil on canvas, Carved frame | 90 x 90cm | 2013

03.
郑宏祥：《两个洞》 | 布面油画 | 50 x 70cm | 2018年
Zheng Hong Xiang: Two Holes | Oil on canvas | 50 x 70cm | 2018

04.
郑宏祥：《方向 No.3》 | 布面油画 | 15 x 15cm | 2017年
Zheng Hong Xiang: Direction No. 3 | Oil on canvas | 15 x 15cm | 2017

05.
郑宏祥：《划行者》 | 布面油画 | 30 x 30cm | 2018年
Zheng Hong Xiang: Rower | Oil on canvas | 30 x 30cm | 2018

06.
郑宏祥：《神话》 | 布面油画 | 114 x 150cm | 2015年
Zheng Hong Xiang: Myth | Oil on canvas | 114 x 150cm | 2015

07.
郑宏祥：《开往自由的慢船》 | 布面油画 | 200 x 360 cm | 2010年
Zheng Hong Xiang: A Rowing Slow Boat to Freedom | Oil on canvas | 200 x 360 cm | 2010

08.
郑宏祥：《遭遇》 | 布面油画 | 100 x 170cm | 2014年
Zheng Hong Xiang: Encounter | Oil on canvas | 1100 x 170cm | 2014

09.
郑宏祥：《珍珠》 | 布面油画 | 45 x 30 cm | 2013年
Zheng Hong Xiang: Pearl | Oil on canvas | 45 x 30cm | 2013