A flat engine is an internal combustion engine with horizontally-opposed cylinders. Typically, the layout has cylinders arranged in two banks on either side of a single crankshaft and is otherwise known as the boxer, or horizontally-opposed engine. The concept was patented in 1896 by engineer Karl Benz, who called it the "contra engine."[1][2] A boxer engine should not be confused with the opposed-piston engine, in which each cylinder has two pistons but no cylinder head. Also, if a straight engine is canted 90 degrees into the horizontal plane, it may be thought of as a "flat engine". Horizontal inline engines are quite common in industrial applications such as underfloor mounting for buses. True boxers have each crankpin controlling only one piston/cylinder while the 180° engines, which superficially appear very similar, share crankpins. The 180° engine, which may be thought of as a type of V engine, is quite uncommon as it has all of the disadvantages of a flat engine, and few of the advantages.
我成功啦！哇塞，我的超大声呢！
這很簡單
我成功啦 ! 哇塞，我的超大呢！😏
我的紙炮甩不開啊～
對啊炸騙我折了5次還是不行
不可能的
可是我的甩開了
可能是你用的方式不對
你們可能是折太死所以甩不開，可以試試看向外折一點就會成功
我甩到手都斷了
呵
？
我用了一個超大又超硬的紙張 結果沒想
後面沒有
不要再
停 停止
好吧
竟然這樣
我只能跟你說 我最後被鄰居投訴了
我站在階梯上跳下來馬上把在午睡的家人吵醒
😁
用A4影印紙效果很差，不如直接用手打紙XD
用A4 紙 效果一般般 用報紙容易壞可是效果超好
熊啊啊啊 为什么我用A4坁
我也成功了
2021?
比較簡單的方法
超好玩
为什么你们的就有声音我都没有声音了
可能是纸的问题，或你手的力气
跟根本沒有聲音啊
可能是纸的问题或你手的力气
Good
要捏著比較薄的地方，大力的甩出去，手不要放開
A flat engine is an internal combustion engine with horizontally-opposed cylinders. Typically, the layout has cylinders arranged in two banks on either side of a single crankshaft and is otherwise known as the boxer, or horizontally-opposed engine. The concept was patented in 1896 by engineer Karl Benz, who called it the "contra engine."[1][2]
A boxer engine should not be confused with the opposed-piston engine, in which each cylinder has two pistons but no cylinder head. Also, if a straight engine is canted 90 degrees into the horizontal plane, it may be thought of as a "flat engine". Horizontal inline engines are quite common in industrial applications such as underfloor mounting for buses.
True boxers have each crankpin controlling only one piston/cylinder while the 180° engines, which superficially appear very similar, share crankpins. The 180° engine, which may be thought of as a type of V engine, is quite uncommon as it has all of the disadvantages of a flat engine, and few of the advantages.
？
用報紙效果不錯唷
😊
我的纸炮响不起来
+猫XL 熊 可能你用的折纸太厚了。
你不够大力甩
哈哈哈哈哈哈哈好
我的纸炮呴起来你晌不起来哈哈哈good
紙越大張就越大聲，我試過超大聲的
聲音那麼小
用力一點
很好玩
Qian Yi Ng因為 紙比較小張
紙越大張就越大聲
骗人的都不能
我用月曆折的
手越大力聲音越大
要用手腕 的力量
骗人
Bryan Yee 你可能用的方式錯誤
跟大家说，去的学校，在礼堂时，老师还没来，我们一起折四角炮（容易版的）我的朋友，旁！超级大声的，700000多个人都听到（700000人是学校的人）
黄雨恩 ㄆㄧˋ
你学校爆炸吗
@@ophelia7306 你什么意思？
@@jenniferlu2243 700000人。。。。一個禮堂
@@jenniferlu2243 在香港不會容納到這麼多人而且我懷疑他是不是打錯了