通过分离单向阀球座密封段，材料改为氧化锆陶瓷，密封段流道直径增加0。
The sealing sections of non-return valve ball seat were separated, material was changed into zirconium oxide ceramic, 0.
他把税单向桌上重重地一摔，叫道：“好啊，你们跟我添乱，我可没时间跟你们这些自作聪明的人纠缠，尤其是外国人。”
He banged his income tax form and yelled, "Well, you're not helping me, and I have no time for wise guys who come around, especially foreigners."
他把税单向桌上重重地一摔，叫道：“好啊，你们跟我添乱，我可没时间跟你们这些自作聪明的人纠缠，尤其是外国人。”
He banged his income tax form and yelled, "Well, you're not helping me, and I have no time for wise guys who come around, especially foreigners."
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