by means of 借助于 ; 用 ; 凭借
filter by means of vacuum 真空过滤器
by means of a transformer 变压器的手段 ; 通过变压器
by means of fraud 以诈骗方法
By means of a conversation 通过谈话的方式
by means of time 通过时间
By means of accident 意外事故
by means of measurement 用测量的方法
By means of heat treatment 通过热处理的手段
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