|
How A Key Open The Lock
, {" p3 a2 g4 p* V1 P4 f _开锁原理( M) }7 L5 o8 j2 G
9 D( @" j: x7 X2 ^
! K; u3 u( G" I1 k* D" X+ t% `9 G$ J5 d" v$ z$ P
How Trumpet Functions
* Q) r* A6 `9 V* V9 Y小号如何工作& M/ i7 v6 u/ j9 V% V. z
0 G9 y( F3 b; C. j( V
7 n2 N& u) b/ H) t# U' ]
: Z6 R8 B! k5 {) ]9 f# y% S, R
9 n# b# Q- S& L1 C
% i, N# O9 i7 xHow Coins Are Filtered! {) }- l: W/ @+ U
硬币是怎样过滤分类的8 W9 d e) {1 b
. l: s% g5 ~. i' v9 B9 V
4 B, K+ T% T, |3 i1 A8 f& Y! k0 S1 E3 b4 j
How Sewing Machine Works) h. y% O. Q- [! O! m
缝纫机工作原理$ l$ Z9 K8 h4 K/ x
8 w. p; E( S2 T3 v5 q( r7 H ! t$ \& {, ~5 q: x0 f
) {5 Z: g6 h% h& Z8 ?" ~) k
How a Zipper Works
0 }& l) |& G& x拉链如何工作& ]3 |. w9 A: g* O; e9 G# b+ j
; {5 v5 V% v5 @ Y, S' r+ M 1 q& ]! G: N% [
; c1 ~$ m' Y0 D8 M' ]4 h
% K; ^0 @8 k- g3 j1 P" x
How Your Heart Functions
, h& h" _! t6 Q心脏的工作原理$ v* d$ Y" g W$ q. d7 g; A
6 X. E3 h3 U4 h% l, T% A' ^
) K0 h4 R# f- C; d" x1 S8 O2 e, M/ N. A& E
How a Gun Works% ~0 T: w8 |6 c3 q" ^
枪的工作原理* J {1 {+ w. [. M; s
+ e" e. n0 j# J/ @% W
) A6 f: w! ?5 T0 a 3 k* }3 A( z# t
5 F2 y8 o: F" b7 f' o" J9 @
/ l( _5 A; D3 |% Z# q' k- _% w' NHow a Grenade Works
8 x: L2 p% I2 x6 J+ A7 V3 |手榴弹如何工作7 T( B8 h, W1 C* K. P% Q
& t, e) I9 U7 M; i8 h
- @' i; N# j1 n. D2 B* e( L6 T
$ b$ A% z7 i1 Y7 j: cHow a Fan Works: c8 n) F/ @! S7 |/ \
电扇工作原理
, ~' I K5 V5 p" L# K% {+ B: K2 z: f% N4 J3 `2 @( X! d" V9 F# V
& o% e: U" G( N* M0 {, c' b7 z4 L4 x! p, `2 |; N" c
How are necklaces made# V, N' f0 h7 Z, e
项链是怎么做的; a. W% a! w; U/ L
" `1 H5 F# Q" ^, p D / j n" i: C/ k& y+ D5 V
+ t! O( Q& Z) v$ F9 L9 x8 nChain making machines
5 V: Q3 k4 {2 s! s7 P5 P环状铁链制作
8 @4 V8 _/ }8 _8 [2 m9 m
2 f8 x2 T5 ~/ r. Z
# Q: y, w2 Z+ W+ l8 o( H4 d
& H& Q4 V, t) E, pFood processing machines
( \" G+ ^7 b* E$ A* Z# A食品加工机器
& s5 V0 H0 W6 S
: I5 s; x, y' c) ?/ T& p ) q; h6 U& ]* G9 S4 g
& A4 q5 a9 n0 c4 {+ g" S
; Z9 @. {4 ^! p1 @. |+ K
圈圈蝴蝶饼干9 `- l0 ?/ H% T, M' H0 n2 {
3 R, u* {/ f' }) v1 A) T. V" X
3 W2 ^7 Y0 i* q8 U% E
7 b' A* Y; Y* E7 J' D9 {4 ?* Q* C) S: M+ C
奶油夹心饼干
7 J6 O7 n. m- {# Z; T' m+ S# b- {# O, {. O, `/ d# A. v4 o
! \/ K# x+ ]! p" U; Z
+ _) f5 b/ ^% q) F! K$ R
脆皮甜筒
2 |6 U0 m- C9 ~" p, u" r
, ~4 ^3 I& I2 p. }$ k {7 c: Y
( D+ ^' h! j: e* I2 r* | ; i( b4 ]7 b! P4 q# ]5 j1 J
( C3 @! g) u& H- c4 W& e: v/ D! n2 _$ W. U( J
麦当劳派7 a- }' v& B; i/ b# A" a7 }" U
K1 r# |7 T' k4 D$ Y1 L/ X) T 0 O1 E! Q0 A1 U4 M
$ x1 i# P! j4 J) I7 ?# ^2 J
9 A, S w- w. N% [
Smart inventions
2 U8 _4 S: R- {2 S1 D机智的发明
" q W, o$ M' f8 I" Y0 {( Y
9 y, \0 N+ T- y3 G* r4 ~% k; B * x& S1 `; J! x! D- W' G
- Y7 g' B6 d7 E& M/ B& X |
|
这里因你而精彩
|
|
|
|
|