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- In this paper, we measured the thermal resistance of multi hole brick, designed external insulation wall and calculated the thermal resistance and the thickness of insulation mortar, which can save energy by 50% in Lianyungang. 试验测定了连云港地区几种多排孔封底砌块的热阻,并在此基础上设计和计算了寒冷地区节能50%25的几种外保温复合墙体的热阻及聚苯颗粒保温砂浆厚度。
- Machining of PCB(printed circuit board) is a typical process of two dimensional multi hole. 印刷电路板PCB的加工是二维多孔数控钻的典型。
- The contact between drillstring and bore hole wall in the process of horizontal drilling is of large area and geometrically nonlinear. 长中半径水平井钻柱与井壁的接触问题是大面积接触的几何非线性问题。
- Dry and solidify the wet film , liquid light sensitive resistance welding, dry the net board and hole wall, etc. 湿膜、液态感光阻焊的干燥和固化;也可用于网版的干燥;板材和孔壁的干燥等等。
- "Is PTH and small via hole wall quality checked by cross-section and followed by a closed loop corrective action? 是否通过切片检验PTH与小导通孔孔壁状况,并有相应的改善对策跟踪?"
- The calculation and analysis of the damage failure of the plunger hole wall for the aeroplunger pump ZB-16D are presented. 对航空柱塞式液压泵ZB-16D的柱塞腔壁贯穿故障进行了结构和受力分析及计算。
- As a typical example, the contact-impact problem between the drillstring and the bore hole wall in oil field has been calculated and analysed. 文中针对石油工程中钻柱这类典型的细长杆与圆形井壁的接触碰撞问题进行了求解。
- Three spiraled ribs designed to minimize downhole torque, reduce damage to the hole wall and ensure maximum fluid circulation. 产品说明 : 稳定器的三个螺旋叶片能有效地降低井下扭矩,减轻对井壁的损害并确定最大量的泥浆循环。
- Polymer anti-caving drilling fluid was used to deal with hole wall instability in constriction of directional geothermal well in Tianjin. 针对天津市地热定向井施工中存在的孔壁不稳的问题,经过摸索,采用聚合物防塌钻井液进行护壁堵漏,取得了良好的效果。
- The results show that the contact -impact problem between the slender rod and the wall of a round hole, such as the drillstring and the bore hole wall, can be solved better. 结果表明,动力间隙元能较好地解决细长杆(如钻柱)与圆孔孔壁(如井壁)的接触碰撞问题。
- The low pressure-sealing plug is installed by pressing the plug into a tapered hole. The surface hardened, but flexible plug achieves anchorage by gripping with the hole wall. 该系列为低压力密封堵头。安装时由工具压入锥形孔,软性堵头被压入孔壁表面。该系列有以下特点:
- The influence of stocking upon ground surrounding the borehole on the stability of hole wall and the influence of nearby foundation drilling on the building are also analyzed. 同时,文中分析了孔周地面堆载对孔壁稳定性的影响和临近基础钻孔对建筑物的影响。
- Louise is very musically inclined. 路易丝很有音乐天赋。
- The dog skins through the small hole in the wall. 那条狗勉强钻过小小的墙洞。
- His strength in a crisis is an ace in the hole. 临危不惧是他的看家本领。
- He was inclined to give them a free hand. 他倾向于放手让他们干。
- By analyzing the random contact and impact between drilling string and bore hole wall at arbitrary depth and circle direction in slim hole well, a dynamic model of whole drilling string is presented. 考虑小井眼细长钻柱沿井深和井眼圆周方向的随机接触碰撞,建立了钻柱瞬态动力学模型。
- I'm inclined to believe him innocent. 我倾向于相信他的无辜。
- He knocked a big hole in the wall. 他把墙撞出了一个大洞。
- I'm inclined to tiredness in winter. 我在冬天易于疲劳。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries