孔的

And there was significant differences between their visual improvement after operation(P0.01).Conclusion In the treatment of retinal detachment with vitreous traction and macular hole,the two methods have similar results in repostion of retinae,but vitrectomy with gas injection was better in visual improvement.

治疗牵引性黄斑裂孔视网膜脱离，2种术式的黄斑孔封闭及视网膜解剖复位率接近，但玻璃体切割注气术视功能恢复方面显著优于黄斑部加压术，玻璃体切割注气术将取代黄斑部加压术。

The design element and the experiment result of reversible orifices and changing orifices low velocity flow is high.

分析了可逆式孔板流量计和可变式孔板流量计的设计原理和实验结果。

By modifying and optimizing the procedures, which were well-described and understood for the synthesis of mesoporous silica, mesoporous alumina based molecular sieve has been successfully prepared.

通过对介孔氧化硅合成工艺的优化与修正可以用来制备介孔氧化铝分子筛。

At one end of the valve housing are formed a pair of through-holes, which communicate with the piston operation spaces, respectively.

在阀壳的一端形成一对通孔，所述通孔分别与活塞运行空间相通。

Puts in the electrically operated installment together the valve lever together with the key in the output axle hole, the valve coupling and electrically operated installment coupling spiral Kong Ru has the deviation to be possible to move slightly the handwheel to cause its correspondence, afterwards

将阀杆连同键一起放入电动装置的输出轴孔内，阀门连接盘与电动装置连接盘螺孔如有偏差可以微动手轮使其对应，之后将阀门连接盘与电动装置连接盘用螺栓紧固。

L Rack mount type (19 wide ) available in 12,16,24.32 and 48 ports; Wall mount type available only in 12 ports.

装配架的规格（19 宽）适用于12，16，24，32和48 端孔；壁式只适用于12端孔。

Since the product was combined Pressing, piercing and flanging over the hole, trimming forming the complex parts Therefore, the installation of card-four high precision, the other mold structure as simple as possible.

由于该产品是结合压形、冲孔、翻边翻孔、切边成形的复杂零件，所以四个安装卡位精度要求高，其它模具结构尽可能简单。

The resin holes will allow me to tap bolt holes in the event they are needed.

树脂孔将允许我向塔螺栓孔，在发生他们所需要的。

Insert special bolt into the preset hole of C form parts ,where the bolt will be fixed into the threaded hole of wedge ,then screw the bolt on with a socket spanner until the first nut drops .

将专用螺栓插入C形无件预留孔与楔块的螺纹孔相连，用套筒扳手拧紧螺栓直到第一个螺帽自行断落。

objective:to explore the effects of out cavity single slip knot technique in non titanium clip two hole method laparoscopic cholecystectomy.methods:to analyzed the clinical data of 62 patients underwent two hole method lc with out cavity single slip knot technique.results:all the operations were finished successfully without conversion.the mean operation time and hospitalization were 55 min and 4d respectively.conclusions:the two hole lc with out cavity single slip knot technique has the advantage of firm and reliable ligation,low operation expense,non titanium clip stay in the body,and avoiding of bile leakage due to titanium clip falling off.

目的：探讨腔外单滑结技术在无钛夹二孔法腹腔镜胆囊切除术中的效果。方法：应用腔外单滑结技术行二孔法lc 62例。结果：患者均行lc，无中转开腹，手术平均时间55min，平均住院4d。结论：无钛夹腔外单滑结法lc具有结扎可靠，手术费用低，并可消除因钛夹留置体内或夹闭不全造成脱落、胆漏等其他并发症。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。