The straight cell partition wall (22) has at an exhaust gas inlet-side end an introduction promoting unit (60) for promoting the introduction of exhaust gas into each straight cell (21).
直室隔壁（22）在排气入口侧端部具有促进排气向各直室（21）内导入的导入促进部（60）。
The straight cell partition wall (22) has at an exhaust gas inlet-side end an introduction promoting unit (60) for promoting the introduction of exhaust gas into each straight cell (21).
直室隔壁（22）在排气入口侧端部具有促进排气向各直室（21）内导入的导入促进部（60）。
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