孔

Combined with new tendency and practice in internal combustion engine industry at home and abroad in recent years,this paper suggests that machining cone of intake and exhaust valve seat insert and guide tube hole is the key technique in machining complicated cylider-head.

结合近年来国内外内燃机行业发展的新趋势和工作实践，对结构复杂的气缸盖机械加工提出了进、排气门座圈锥面与导管孔的加工是其工艺技术关键，从定位方式、基准选择、气门座底孔与导管孔底孔的加工，气门座圈锥面加工方式和导管孔的加工方式等方面进行了探讨和分析。

This machine can be used drilling,core drilling, reaming,boring,tapping, spot-facing and chamfering etc.

可以进行钻孔、扩孔、铰孔、镗孔、攻丝、锪平面，倒角等工作。

Stem leaves elliptic to narrowly ovate, short strigose; pedicel 1-3.2 cm; calyx densely short strigose; corolla limb 3-4 mm wide; abaxial aperture of nutlets 1.5-2.5 mm

茎生叶椭圆形到狭卵形，；花梗1-3.2厘米；浓密的花萼短具糙伏毛；花冠瓣片3-4毫米宽；小坚果1.5-2.5毫米的背面的孔 5 Microula bhutanica 大孔微孔草

After 72 hours incubation, the chondrocytes were digested into single cell suspension. Then they were incubated in the 96-well culture plate with the density of 1×10^8 L^(-1), 100 μL per well and six wells for per group.

白细胞介素1β加入量为5μg/L，培养72h将实验用细胞消化传代后制成单细胞悬液，以1×10^8L^的密度接种于96孔培养板，100μL/孔，每组6孔。

The machining of valve guider and valve set is one of the key process in production of engine cylinder-head.Arming at the precision finishing of valve guider and valve set,a special compound deep-hole cutting tool was designed and made out.

发动机气门导管孔和气门座圈的加工是发动机缸盖加工的关键工艺之一，针对气门导管孔与气门座圈的精密加工，设计制造了专用的复合深孔加工刀具，介绍了该刀具的结构与加工原理，并在试验的基础上优选了加工刀片材料，设计了加工刀片的结构参数。

The underwater pipeline tapping machine meets working needs by introducing such design as using hydraulic system as power source, putting transmission box to the bottom of machine, setting safety clutch in feeding system, having fast translation function of the spindle, detecting the spindle translation with differential, using dial to display and seting feed depth.

水下管道开孔机以液压系统为动力，采用传动箱下置、进给系统中设置安全离合器、主轴带有快进和快退功能、差速器检测主轴的进给运动、刻度盘指示和设定开孔深度等设计方案，满足了水下管道开孔作业的要求。

Many horses Products: Bits; reamer; countersink drilling / reaming drill; tap; carbide thread milling cutter; cutter; die; white steel universal and dedicated to a workpiece material twist drill; Drilling holes or drilling and tapping Shen composite tool; Center drill and drill centering; high-performance ADX and CDX high-speed steel drill bits carbide drill bits (both outside the convex cutting edge, high efficiency, easy to chip-breaker); Deep-hole Drill the parabolic trough PFX; have "self-thinning thick heart," the characteristics of taper shank twist drill the first A030 (drilled shafts designed to take into account the characteristics of the cardiac thick thinning, re-mill grinding, when no longer horizontal edge); VANGARD Series and SHARK Series high-performance machine tap; particularly suitable for machining aluminum, aluminum alloy, stainless steel and ductile extrusion tap; a variety of rough-cut and fine cut Endmill; Solid Carbide Thread milling cutter and the tap; with TiAIN coating cutting tool used to do: and so on.

钻头；铰刀；锪钻/扩孔钻；丝锥；硬质合金螺纹铣刀；铣刀；板牙；白钢刀通用性的和专用于某种工件材料的麻花钻；钻削和沉孔或钻孔攻丝复合刀具；中心钻和定心钻；高性能的ADX高速钢钻头和CDX硬质合金钻头（均有外凸形切削刃，效率高、易断屑）；PFX抛物线槽形深孔钻头；有&自我心厚减薄&特点的锥柄麻花钻头A030（钻槽设计中考虑了心厚减薄特点，重磨时不需再修磨横刃）；VANGARD系列和SHARK系列高性能机用丝锥；特别适合于加工铝件、铝合金、韧性钢和不锈钢的挤压丝锥；各种粗切和精切立铣刀；整体硬质合金螺纹铣刀和丝锥；带TiAIN涂层的用于干切削的刀具：等等。

The water transport efficiency in ring-porous species vessels is higher than that in diffuse-porous species and none- porous species, but ring-porous species vessels more easily occur embolism.

环孔材树种导管比散孔材导管和无孔材管胞输水效率高，但它比后两者更容易发生空穴和栓塞。

Maximum value of ring-porous species-Fraxinus mandshurica , Fraxinus mandshurica , Phellodendron amurense, Quercus mongolica, semi ring-porous Juglans mandshurica, diffuse-porous Betula platyphylla, Tilia amurensis and non-porous Pinus sylvestris, Pinus koraiensis were as following: 430.53, 516. 36, 234. 00, 625. 93, 945. 83, 199. 49, 507. 93, 142. 43, 286. 21cm〓cm〓h〓 in diumal course during the growing season, The sap flow persisted after leaf senescence until the mid-October.

在生长季中环孔材水曲柳、水曲柳、黄波罗、蒙古栎树干液流密度日最大峰值分别为430.53（8月末）、516.36（9月中旬）、234.00（7月下旬）、625.93 cm〓cm〓h〓（9月初）；半环孔材胡桃楸为945.83 cm〓cm〓h〓；散孔材白桦和紫椴分别为199.49（9月上旬）、507.93 cm〓cm〓h〓（8月上旬）；针叶材樟子松、红松分别为142.43（7月中旬）、286.21cm〓cm〓h〓（7月下旬）。

The technique does not have any simplification of drainage holes. In this paper, discussions are mainly conducted on the substructure mesh dividing and its second time automatic dividing, the substructure shape, the continuity among substructures and general elements, the classification and definition of the integrated hydraulic model of drainage substructure, the iteration computation of water level inside drainage hole, the application of the technique in solving unsteady unsaturated seepage field, etc., therefore, the high efficient, precise and quantitative analysis of the complex seepage with densely distributed drainage holes is totally realized.

该技术不对排水孔幕作任何简化，本文着重从子结构网格划分模式及二次自动剖分、子结构单元形态、子结构与总体单元网格之间的连续性、排水子结构完整水力学模型分类及定义、排水孔内水位迭代计算、排水子结构法在非稳定非饱和渗流场中的推广应用等各个方面进行论述，实现了对工程复杂渗流场中密集排水孔幕的高效、精细、定量分析。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。