Ntawm qhov kev ncua deb ntawm lub meshing point ntawm tus hlau sawb sib sau, lub vuam caj pas yog txuas rau hauv cov yeeb nkab steel rau vuam. Ob lub vias sab hauv thiab sab nraud yuav tau txais cov qauv vuam ntawm ib qho {}} ficament submerged arc vuam nrog DC rov qab txuas.
27.7. Dab tsi yog qhov ua haujlwm ntawm vuam nyob sab hauv?
Sep 01, 2025
Xa kev nug
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