有時這些碳棒包上一層銅,以增加其導電性.Sometimes the carbon rods are copper coated to improve electrical conductivity.當定購這種硅碳棒時,提供額定電阻是非常重要的.It is important to provide the nominal resistance when ordering.這種硅碳棒的連橋結構正是在此基礎上去除了任何焊接部分.The Ele...
Her voice was shockingly loud. "Put the chair down," she brayed.她的聲音大得嚇人?！胺畔乱巫樱彼致曊f道。Shockingly, this useless and dangerous surgery did not end until the 1930s.令人震驚的是，這種既無效又危險的手術直到20世紀30年代才被廢止。His memory was becoming sh...
A hydrocarbon was known to be either an alkene or alkane.某碳氫化合物已知可能是烯烴或是烷烴.The hydrocarbon must be an alkene.這個碳氫化合物必定是烯烴.The betaine will collapse to the alkene only when these two functions are eclipsed.只有當這兩個基團移至重迭位置時...