1	半梯形环	half keystone ring
2	不变间隙活塞	constant clearance piston
3	创成半径(转子机)	generating radius
4	定时齿轮室罩	camshaft drive(gear)cover
5	封闭喷射室	closed spray chamber
6	副燃烧室	subsidiary combustion chamber
7	缸体宽度(转子机)	operating width
8	滚花修复活塞	knurled piston
9	滑履式活塞裙	slipper skirt
10	滑裙活塞	slipper piston
11	活塞标记	piston mark
12	活塞顶部	piston head
13	活塞裙扩大衬簧	piston skirt expander
14	活塞销孔	piston pin boss
15	开槽油环	slotted oil control ring
16	抗热变形活塞	autothermic piston
17	螺旋弹簧加载双坡口油环	coil spring loaded slotted oil control ring
18	内上坡口	internal bevel top
19	内下坡口	internal bevel bottom
20	平顶活塞	flat head piston
21	气缸盖罩	valve mechanism cover
22	曲轴箱防爆门	crank case explosion-proof door
23	曲轴箱检查孔盖	crankcase door
24	曲轴箱通气口	crankcase breather
25	裙部开槽活塞	split skirt piston
26	燃烧室容积比	volume ratio of combustion chamber
27	扫气储器	scavenging air receiver
28	双坡口油环	double bevelled oil control ring
29	通道面积比	area ratio of combustion chamber passage
30	筒形活塞	trunk piston
31	凸顶活塞	crown head piston(convex head piston)
32	凸轮轴轴承座	camshaft bearing bush seat
33	涡流式燃烧室	turbulence combustion chamber
34	镶因瓦钢片活塞	invar strut piston
35	楔形燃烧室	wedge-section combustion chamber
36	浴盆形燃烧室	bathtub section combustion chamber
37	整体活塞裙	solid skirt
38	中间隔板	intermediate bottum
39	主燃烧室	main combustion chamber
40	组合式活塞环	compound piston ring

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