merry Christmas
1import turtle
2screen = turtle.Screen()
3screen.setup(800,600)
4circle = turtle.Turtle()
5circle.shape('circle')
6circle.color('red')
7circle.speed('fastest')
8circle.up()
9square = turtle.Turtle()
10square.shape('square')
11square.color('green')
12square.speed('fastest')
13square.up()
14circle.goto(0,280)
15circle.stamp()
16k = 0
17for i in range(1, 17):
18

y = 30*i
19

for j in range(i-k):
20

x = 30*j
21

square.goto(x,-y+280)
22

square.stamp()
23

square.goto(-x,-y+280)
24

square.stamp()
25

if i % 4 == 0:
26

x = 30*(j+1)
27

circle.color('red')
28

circle.goto(-x,-y+280)
29

circle.stamp()
30

circle.goto(x,-y+280)
31

circle.stamp()
32

k += 2
33

if i % 4 == 3:
34

x = 30*(j+1)
35

circle.color('yellow')
36

circle.goto(-x,-y+280)
37

circle.stamp()
38

circle.goto(x,-y+280)
39

circle.stamp()
40square.color('brown')
41for i in range(17,20):
42

y = 30*i
43

for j in range(3):
44

x = 30*j
45

square.goto(x,-y+280)
46

square.stamp()
47

square.goto(-x,-y+280)
48

square.stamp()
49turtle.exitonclick()

 树脂胶流量测试系统由一台MRF-2.0E型胶流量测试机,一台MRF-P1取样冲模机和一台MRF-P2取样冲模机组成。设计紧凑，外形美观，符合美国IPC-TM-650标准中试验方法2.3.17各项要求,用于测量半固化片的树脂流动性测试。
 The RF-2,OE Resin Flow Press is desighed to meet the requirements of IPC-TM-650 Method2.3.17for determing the resin flow Percent of prepreg as well as for "scaled flow testing"
MRF-P1冲模机
电动冲切类机床带Ф81.10mm直径冲模
   能力（KN）-------------------------------------20
   行程（㎜）-------------------------------------40
   用电要求--------------------------------220V，50HZ，300W
   模具直径（㎜/in）---------------------------81.10/3.192
   机体尺寸（㎜）：（W×D×H）-----------------320×480×540
MRF-P2冲模机
    气动类机床带方形冲模              
    能力（KN）--------------------------------------30
    行程（㎜）--------------------------------------40      
    用气要求----------------------------------------6 bar以上
    模具尺寸（mm）-----------------------------102×102(±0.25)
    机体尺寸（㎜）：（W×D×H）-------------------370×370×540
    机体重量（㎏）----------------------------------140
    用电要求--------------------------------------- 220V，50HZ

流动性试验机
    MRF-2.0E型流动性试验压机,设计紧凑，外形美观,符合美国IPC-TM-650标准中试验方法2.3.17各项要求,用于测量半固化片的树脂胶流动性测试。
MRF-2.0E胶流量试验压机
● 测试半固化片树脂流动性
● 进口优质零部件组装
● 压缩空气驱动
● 数字式显示，温度PID控制
● 操作简便，无须特殊维护
The MRF-2,OE Resin Flow Press is desighed to meet the requirements of IPC-TM-650 Method2.3.17for determing the resin flow Percent of prepreg as well as for "scaled flow testing"
● Special design for resin flow testing of prepreg 
● All quality parts build up in China
● Pneumatic operation
● Trouble-free equipment requires no special maintenance