这些专业人员负责某个特定产品范围。他们对所负责产品的技术性内部工作情况和功能了如指掌。
These specialists were responsible for a particular product range. They knew the technical inner workings and functionality of the products they are in charge of inside out.
对7例陈旧性拇指腕掌关节脱位的病人进行背侧和外侧韧带的修复，随访8 ~ 37个月，证明有很好的治疗效果。
Seven patients with old dislocation of carpometacarpal joint of thumb were treated by repairing dorsal and lateral ligaments and obtained satisfactory results in 8 ~ 37 months postoperatively.
他们对所负责产品的技术性内部工作情况和功能了如指掌。
They knew the technical inner workings and functionality of the products they are in charge of inside out.
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