德国BECKER贝克真空泵VT4.4 ◆滑片式真空泵：无油、空冷 VT4.2/ VT4.4/ VT4.8/ VT4.10 /VT4.16 /VT4.25 /VT4.40 KVT3.60 KVT3.80 KVT3.100 KVT3.140 VTLF200 VTLF250 VTLF360 VTLF400 VTLF500 滑片式真空泵：有油、空冷
