Hlola Ikhwalithi kanye Nokunemba kwe-mmhg gauge yokucindezela okuvela e-GuanshanUma kuziwa esilinganisweni esithembekile nesinembile sokucindezela, i-mmhg gauge yokucindezela igqama njengenketho ephezulu yezinhlelo zokusebenza ezihlukahlukene zezimboni. E-Hangzhou Guanshan Instrument Factory,...
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