solder mask 间距设置
红胶的熔点是多少?
红胶的熔点是多少?
120度到130。
红胶?般起到固定、辅助作?。焊锡才是真正焊接作?。
SMT「红胶」制程?其实其正确名称应该是SMT「点胶」制程,因为?部分的胶都是红?的,所以才俗称「红胶」,实际上另外也有黄?的胶,这就跟我们经常称电路板表?的「solder mask」为「绿漆」是?样的道理。
我们可以发现电阻及电容这些?零件的下?正中间都有?团红?的胶状物体,这个就是红胶。
一年级英语小故事演讲简单一分钟?
1. Mask(面具)
Look! This is my mask.
看!这是我的面具。
It’s a small duck.
它是一只小鸭子。
Quack… Quack… It can sing.
嘎…嘎…它会唱歌。它
It is yellow. It is lovely. I love it.
是黄色的。它是可爱的。我爱它。
2. Small animals(小动物)
Today Kitty and I go to the farm. We can see some small animals on the farm.
今天基蒂和我去农场。我们可以看到一些在农场小动物。
I like small animals. Look, this is a rabbit. It is white. It can jump.
我喜欢小动物。看,这是一只兔子。它是白色的。它能跳。
This is a bird. It is small. It can sing and fly.
这是一只鸟。它很小。它会唱歌和飞翔。
Look at the bee. It likes flowers.
看那只蜜蜂。它喜欢花。
3. Toys 1(玩具1)
Hello! I am Alice. I am seven years old. Look at my toys.
你好!我是爱丽丝。我今年七岁。看我的玩具。
I have a doll and a kite. They are beautiful.
我有一个洋娃娃和一个风筝。他们是美丽的。
Ben is my good friend.
本是我的好朋友。
Today we go to the toy shop.
今天我们去玩具商店。
Ben likes the bicycle.But I like the toy bear.
本喜欢自行车。但是我喜欢玩具熊。
4. Toys 2(玩具2)
I’m Danny. I’m a boy. I like toys very much.
我是丹尼。我是一个男孩。我非常喜欢玩具。
I go to the toy shop today. I see a ball. It’s green and yellow.
我今天去玩具店。我看见一个球。它是绿色和黄色的。
I see a bicycle, too. I can ride the bicycle. I like the red kite.
我也看到一辆自行车。我会骑自行车。我喜欢红色的风筝。
The kite is big. I can fly the kite.
风筝是大的。我会放风筝。
5. Food(食品)
I am Kitty. I am tall. I am not fat.
我是凯蒂。我是高大的。我不胖。
I like to drink milk. I like to eat eggs, cakes and noodles.
我喜欢喝牛奶。我喜欢吃鸡蛋,蛋糕和面条。
I have a good friend. Her name’s Alice. She likes fish.
我有一个好朋友。她的名字是爱丽丝。她喜欢鱼。
She likes soup too. Smell the soup. It’s nice.
她也喜欢汤。闻到汤。它很好。
Today we go to the restaurant. We can eat nice food.
今天我们去餐馆。
We are happy.
我们可以吃美味的食物。我们是快乐的。
6. On the farm(在农场里)
Look, it’s a farm. It’s very big. What do you see? I see a dog. It’s brown. It can run.
看,这是一个农场。这是非常大的。你看到了什么?我看见一只狗。它是棕色的。它能跑。
It goes “Woof! Woof!”. Is that a dog? No, it’s a cat. What color is it? It’s brown and white.
它会“汪!汪!”那是一只狗吗?不,它是一只猫。它是什么颜色的?它是棕色和白色的。
“Baa! Baa!” What do you hear? I hear sheep? How many sheep? Seven sheep. They are white.
“咩!咩!“你听到了什么?”我听见羊吗?有多少羊?七只羊。他们是白色的。
They are on the farm. They are happy.
他们在农场。他们是快乐的。
7. My friends(我的朋友们)
I have two friends. They are Tom and Ann.
我有两个朋友。他们是汤姆和安。
Tom is a fat boy. He is seven years old. He likes to eat cakes and pizzas.
汤姆是一个胖男孩。他七岁了。他喜欢吃蛋糕和披萨。
Ann is six years old. She likes to eat sweets. I like to eat ice creams.
安六岁了。她喜欢吃糖果。我喜欢吃冰淇淋。
We are happy.
我们是快乐的。
8. My family(我的家人)
Look! This is my father. He is tall.
看!这是我的父亲。他是高的。
This is my mother. She is thin. She can sing very well.
这是我的妈妈。她是瘦的。她可以唱得很好。
This boy is my brother.
这个男孩是我的兄弟。
He is four years old. He is fat. He likes to eat biscuits and eggs.
他四岁。他很胖。他喜欢吃饼干和鸡蛋。
He likes balls. He is lovely.
他喜欢球。他很可爱。
9. Small animals(小动物)
I am black and white. I give me milk. Guess who I am. It’s me. I am a cow.
我是黑人和白人。我给我牛奶。猜猜我是(猜)。是我。我是一头牛。
I am white. I have two lone ears. I can run very fast . I can jump, too. I like grasses . Guess who I am. It’s me. I am a rabbit.
我是白色的。我有两只孤独的耳朵。我可以跑得很快。我也会跳。我喜欢草)。猜猜我是谁。是我。我是一只兔子。
I am small. I am green. I can swim in the water . Guess who I am. It’s me, the frog.
我是小的。我是绿色的。我可以在水里游泳)。猜猜我是谁。是我,青蛙。
Miaow… Miaow… Guess who I am? It’s me, the cat. I like to eat fish. I can run very fast .I like to chase mice .
喵…喵…猜猜我是谁?是我,猫。我喜欢吃鱼。我可以跑得很快。我喜欢捉老鼠追。
10. At the restaurant(在餐馆)
Today I go to the restaurant with my father. My father likes noodles.
今天我和爸爸一起去餐馆。我爸爸喜欢面条。
I don’t like noodles. The noodles taste bad. I like chicken.
我不喜欢面条。这面条味道不好。我喜欢鸡肉。
The chicken tastes good. And I like onions very much. We are happy.
这鸡肉味道很好。我喜欢洋葱。我们是快乐的。