查询词典 perforator

Concrete targets are standard material for testing penetration performance of jet perforator s,the performance of the targets affects the test result.

混凝土靶是检验聚能射孔器穿孔性能的标准物质，其性能波动影响试验结果。

When performing in horizontal well,the perforator is laying side well at horizontal depth and can not be center in bore hole.

而在水平井内射孔时，射孔器在水平段内总是紧贴在套管内壁下端，不能在井筒中居中。

The thoracodorsal artery perforator flap was used to repair for the skin defect in 6 cases based on the anatomical study.

在解剖研究基础上应用了游离胸背动脉穿支皮瓣修复肢体和躯干皮肤缺损共6例。

objective to assess the clinical significance of preoperative localization of incompetent perforator veins by color doppler ultrasonography in venous ulcer of lower extremities.

目的 评价彩色多普勒超声用于下肢静脉性溃疡术前定位功能不全的交通支静脉的临床价值。

Perforation effect is seriously affected by the clearance between perforator and casing.

射孔枪与套管之间的间隙过大会影响射孔效果，太小容易出现工程事故。

This paper introduces a new non-excavating curve pipelayer equipment——trajectory control pneumatic perforator .

本文介绍一种新型的曲线非开挖铺管设备──轨迹可控气动穿孔机，并在对特殊结构和施工方法的比较与分析中，阐述其运行机理。

McGregor (1973) [5] raised by direct skin vascular blood supply of the flap, and the musculocutaneous perforator vessels and blood vessels of the skin that is: axial and random flap flap two concepts.

McGregor(1973)[5]提出了由直接皮肤血管供血的皮瓣和由肌皮血管及穿支血管供血的皮瓣即：轴型皮瓣和随意皮瓣两种概念。

Presented are reasons to select the scheme, developing process of the type-51 body-free perforator, and main operations in perforating and fracturing.

论述了选用该方案的原因，51型无枪身射孔器的研制过程，射孔和加砂压裂施工简况。

Pathological examination early after the ablation procedure showed coagulatie necrosis of both the myocardium and the septal perforator arteries.

修改：消融术后早期进行的病理检查发现心肌和冠状动脉的室间隔支都有凝固性坏死。

Objective To study the clinical application of medial supramalleolar perforator-based flap of posterior tibial artery in repairing foot and ankle soft tissue coloboma.

目的 探讨胫后动脉内跟上穿支筋膜蒂皮瓣在足踝部软组织缺损修复中的应用价值。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。