冲程: travel; stroke; 4数: frequently; repeatedly泵最高冲程数: maximum strockes of pump每分钟滑枕冲程数: number of ram strokes per minute程数: number of passes冲程: [机械工程] travel; (length of) stroke: 4 冲程发动机 four-stroke engine管程数: number of tube passes壳程数: number of shell passes流程数: number of pass行程数: touch number泵冲程: pump stroke; pumstroke carrea de golpe; throw of pump长冲程: long stroke冲程；振幅: stroke冲程顶: top of stroke冲程分: spm单冲程: single stroke短冲程: short stroke二冲程: two stroke◇二冲程发动机 [机械工程] two-stroke engine; 二冲程内燃机 two-stroke internal combustion engine; 二冲程循环 [机械工程] two-stroke cycle发作，冲程: stroke阀冲程: valve stroke反冲程: return stroke; reversal of stroke高冲程: high-stroke空冲程: idle stroke上冲程: upstroke; upward stroke双冲程: double stroke
