Objective To introduce the technique theory, structure design, technique data and clinical use of a portable Negative Pressure Wound drainage therapy device.
目的介绍一种便携式负压创面引流治疗装置的技术原理、结构设计、技术指标和临床使用情况。
The iteration of geometric programming with constraint positive negative term equations is applied to the optimal design for bolted tight connections used in pressure vessels.
对压力容器的螺柱组紧联接的优化设计，采用了约束正负定式几何规划迭代法。
The practical design of central negative pressure system is introduced. This system is suitable for all kinds of hospital.
提出中心负压系统实用设计，适合各类不同规模医院采用。
Special negative pressure adsorption of the workpiece, special distribution channel and the structure design, effectively guarantee the cutting quality;
特制负压吸附工件，专用布料通道及张紧结构设计，有效保证裁剪质量；
The negative pressure for under balanced perforating is a key parameter in well perforating design. It can directly influence the productivity and borehole stability of a perforated well.
负压射孔技术的关键参数之一就是负压差的大小，它直接影响油井射孔完成后的产能以及孔眼的稳定性。
The negative pressure for under balanced perforating is a key parameter in well perforating design. It can directly influence the productivity and borehole stability of a perforated well.
负压射孔技术的关键参数之一就是负压差的大小，它直接影响油井射孔完成后的产能以及孔眼的稳定性。
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