单词	zonas
释义	同zona
随便看	four-vidicon camera four voices four-wall four-wall-contract four waller four-walling four wave mixing four-wave mixing four wave mixing in semiconductor laser amplifier four wave mixing in semiconductor optical amplifier four-way four way cock four-way dip four-way intersection four-way joint box four-way junction box four way pipe fitting four-way reinforcing four-way rotational crossing four-way star point junction four-way stop four-way switch four way valve four-way valve fourway valve