港口的起吊机是靠什么原理使其那样方便容易起吊的?是否和电磁铁有关?
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/18 19:51:46
xX[OI+H+S!hh5]e Ѡ]A<6n c\mb`vvUw?/w4v JQҮs\U/FS+)Y6vӫT~"5=ծ,P4zr{E dDD¥s6"^`Uw^47Jq04!%2/Kӳ3?.N|J*8/>w,7?Lܡ.arzѩFQ[$3+"c=W3p
f}$"Vyo$PXW4RϏ@`jhmlQBpN۠6aI]b0[?lZQ~uI~zZ6dq/#=w
Y:W9{P
u=ڍVXNN)5~8Xt6DfYZw[
ㅫ"EpqTFӤxMw-Ema3ebOj!A*`,/:syٵ5wq|x[u\_DÄ+Ww%w?-g2nGPI|C=guz#;Ch\o>$ۨ8PN%,IJo~\U"߭y"Uv]ᦗHLP6RJpǑAZTehC4X0YGaUoNa"tkזc
pu\C84ؠDbrk|,"hH2Ep;)pBC^z:155/l>?S?r-BXnޞ\V\6ELv::n6Ѐ8
z"=2KoԑmbmhX\^7qC{rDh2 6"N"<#&~TXaPD&dDn[C0[9C'sorŇO琜G8̇ma