stopper hole
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A stopper especially for the hole through which a cask, keg, or barrel is filled or emptied.
塞子塞子，尤指木桶、圆桶或桶上用来注入或倒出的洞而配的塞子
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"Bung:a stopper especially for the hole through which a cask, keg, or barrel is filled or emptied."
塞子：尤指木桶、圆桶或桶上用来注入或倒出的洞而配的塞子。
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During grain storage, ALP was divided into as fumigating pharmaceutical after sealing in order to store at low dosage. When the gas composition mensurated, using the rubber stopper which with double hole to get back PH3. In the gain bulk this method can retain the concentration of PH3, extend the period of validity, disinsection and sterilization, ensure safety of grain stored .
粮食在储藏过程中，粮堆密闭后投入磷化铝片剂进行低剂量保管，在测定密闭粮堆内的气体成分过程中，用双孔橡皮塞将PH3气体回收到粮堆内，使粮堆内更好地保持PH3浓度的含量，延长其有效期，起到杀虫杀菌的作用，达到安全储粮的目的。
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stopper hole：止裂小孔
stopper hitch 单掣索结 | stopper hole 止裂小孔 | stopper knot 防松绳结的统称防松绳结统称
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stopper hole：止裂孔
裂缝 crack | 止裂孔 stopper hole | 船舶修理单 repair list
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marine umbrella type hole stopper：船用伞形堵漏器
marine type dynamo 船用直流发电机 | marine umbrella type hole stopper 船用伞形堵漏器 | marine valve 船用阀门