控制运动的第二类技术是呼吸门控技术（Gating Technique），3大加速器制造公司正积极开展和实施该种技 术。它又分为两种：被动呼吸门控和呼吸引导自控。
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series gating technique 串联闸控技术
sequential range gating technique 作用距离连续接通技术
Power Gating technique 功率门控技术
escape gating technique 逃逸门技术
circular gating technique 环形浇注工艺
Compared with traditional counter gravity casting technique, the technique combining with appropriate gating system makes great contributions to the enhancement of mechanical property of castings.
相比传统的反重力铸造技术，该技术配合合适的浇注系统对铸件性能有明显的改善作用。
The casting technique with top gating system, outer shaped iron chill, compound casting mold and core assembly molding was used for producing aluminum impeller on a large scale successfully.
详细介绍了采取顶注式浇注系统、成形外冷铁、复合铸型、组芯造型的铸造工艺，成功地生产出批量铝叶轮。
Moreover, experiment characterization of pulses two femtosecond pulses by the frequency-resolved optical gating (FROG) characterization technique is also given.
给出了频率分辨光开关法（FROG）技术识别超快时域两脉冲的实验结果。
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