Insist Aoyama do not relax, rooted in the broken rock, known grinding million hit is also tough, Seoul, the four corners of the world wind.
咬定青山不放松，立根原在破岩中，知磨万击还坚韧，任尔东西南北风。——郑板桥。
"Ma Tan natural village, according to the 1987 version of" Songyang County, Zhejiang Province, "records:" on the altar with the grinding of rock and named.
麻坛自然村，据1987年版《浙江省松阳县地名志》记载：“以坛上有磨形岩石而得名。”
Insist Aoyama do not relax, rooted in the broken rock, known grinding 000-1000 tough, Seoul, East and West Wind. [Banqiao].
咬定青山不放松，植根于破碎的岩石，称磨000- 1000艰难，汉城，东部和西部的风。【板】。
Theoretical reason of reducing ball size of coarse grinding has been found through tests on compressive strength of rock and rupture stress of natural ore lump.
通过岩矿的抗压强度和自然矿块破断力力学试验研究，找到了降低粗磨机钢球尺寸的理论依据。
From upper Triassic to Jurassic of west Sichuan Depression, the rock is dense, the grinding is strong, the speed of well drilling is slow and the cycle of building well is long.
川西坳陷上三叠统至侏罗系地层主要表现为岩石致密、研磨性强，钻井速度慢，建井周期长。
Each grinding roller is composed of fixed rock arms, frame and hydraulic pressure system, which is the drive unit.
每一个磨辊，它都是由固定的摇臂、安装摇臂的支架，以及液压系统组成了粉磨的动力单元。
He eventually hopes to use rock-cutting ROVs that will drive across the sea floor, grinding ore as they go and sending it to the surface via a tube at a rate of 400 tonnes per hour.
海登说，这是因为ROV技术只是在最近才得以真正用于实战。他最终希望能用可以横穿海底的岩石开掘机ROV将矿石碾碎，然后通过一条管道以每小时400吨的速度将其运至海面。
He eventually hopes to use rock-cutting ROVs that will drive across the sea floor, grinding ore as they go and sending it to the surface via a tube at a rate of 400 tonnes per hour.
海登说，这是因为ROV技术只是在最近才得以真正用于实战。他最终希望能用可以横穿海底的岩石开掘机ROV将矿石碾碎，然后通过一条管道以每小时400吨的速度将其运至海面。
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