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最新农业机械标准ＧＢ／Ｔ１１４８—９３内燃机铝活塞技术条件ＧＢ／Ｔ１１４９．３—９３内燃机活塞坏 刮环ＧＢ／Ｔ１１４９．５—９３内燃机活塞环 油环ＧＢ／Ｔ１１５０—９３内燃机湿式铸铁气缸套技术条件ＧＢ／Ｔ１１５１—９３内燃机主轴瓦及连杆轴瓦技术条件Ｇ...
The latest agricultural machinery standards GB / T1148-93 Internal combustion engine aluminum piston technical conditions GB / T1149.3-93 Internal combustion engine piston ring bad GB / T1149.5-93 Internal combustion engine piston ring oil ring GB / T1150-93 Internal combustion engine wet cast iron cylinder liner Technical conditions GB / T1151-93 internal combustion engine main bearing and connecting rod bearing technical conditions G ...