drop hole 中文意思是什麼
drop hole
解釋
落砂機-
The result is that this gas pool has simple structure, only forms a little nose - like structure at the district of fenghuangshan ; this pool belongs to delta front sub - facies sedimentary model, the underwater distributary channel and mouth bar is the better sedimentary microfacies ; the physical property of the reservoir is poor, the type of pore of the reservoir rock mostly are intergranular pore, intergranular solution hole and little are intercrystalline micropore ; the influential factors of pore structure and physical property are lithofacies, lithologic character and diagenesis ; the off - take potentia of all the testing well are deadly shortness, the wells have the worth of industrial recovery only under the condition of going through sand fracturing, and in the early of binging into production, the oil and sheath pressure drop rapidly, the production of the well drop rapidly
研究認為該氣藏構造簡單，只在鳳凰山形成了一個小型的鼻狀構造；屬於三角洲前緣亞相沉積模式，水下分流河道和河口壩是有利的沉積微相；儲層物性差，儲層巖石的孔隙類型主要有粒間孔、粒間（內）溶孔及少量晶間微孔；影響蓬萊鎮組氣藏儲層孔隙結構及儲集性的因素有巖相、巖性條件及成巖作用；所有測試井自然產能都極低，必須經加砂壓裂后才有工業開采價值，且投產初期，油套壓下降較快，氣井產量下降迅速。 -
If you happen to drop through a hole or trapdoor, you ' ll know where the upstairs are
如果你掉到洞里或是陷阱門里而掉到下一層，你會找到上去的樓梯的。 -
Immovable obstructions is such as car path 、 cover of sewer and paving road, the player must life the ball and drop it within one club length without penalty, but not near the hole
無法移動之妨礙物，如：球車道、噴灌排水井蓋、路梯等設施，可以在不更靠近果嶺一方的一桿范圍之內拋球，不罰桿。 -
If our sun were to suddenly collapse into a black hole of the same mass in a split second, the earth s orbit would not change a bit ! of course, we will feel a large drop in temperature though because we won t be receiving any energy from it
比喻來說，如太陽忽然成為相同質量的黑洞，地球的軌道不會有絲毫改變當然我們會感到溫度大降，因地球再接收不到太陽所發出的能量。 -
The drop of rain makes a hole in the stone, not by violence, but by of falling
雨滴穿石，非靠蠻力，皆因持之以恆 -
This hill - drop drill is characteristic of precision sowing ( one hole one grain ), high productivity, simple structure, universal purpose, and reliability
其可實現手動播種和自動播種，具有一穴一粒精量播種、生產率高、結構簡單、通用性好、工作可靠等特點。 -
Piston plated by 0. 5 - 3u tin on the surface in chemical way, the tin layer with little hole has the lubri - cative quality of soft metal. it can absorb more lubricative oil to drop the friction between the piston and cylinder
在活塞表面用化學方法鍍覆05 . - 3的錫層，多孔的錫層有軟金屬的良好潤滑特性，能吸附較多潤滑劑，降低了活塞與氣缸音的摩擦功 -
This distributor use small space. has more distribute hole, little gas resistance, low pressure drop, wide operation flexibility
該氣液分佈器空間佔位更低，氣體通道開孔率更大，氣流阻力小，壓降低，操作彈性范圍大。 -
Abstract : the paper presented a kind of drilling hole method that adopted direct circulation and percussion drilling, casing and cliff - protection by mud. the method applied in the complex gravel layer which has the trend to emerge cave - in and drop from the drilling wall
文摘:介紹一種在砂卵石地層層厚復雜、孔壁易掉塊、易坍塌的鉆孔的成孔方法? ?正循環回轉與沖擊鉆進、套管與泥漿護壁成孔。
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