砂的

After more than 20 years of development, the annual output of heavy oil, tar sand increased to nearly 100 million tons by 20 million tons.

经过20余年的发展，重油、沥青砂的年产量由2000万吨上升到近亿吨。

It is an ideal substitute of natural rubble and sand.

是天然碎石和砂的理想的替代品。

The acorreding mathod is presented to solute the defficulty of the directly transfering coating technique under self-hardening conditions,and the process obtains the propose of short time,low cost,smooth surfaces and accurate sizes.

采用CO2水玻璃硬化背砂的铸造工艺及在自硬条件下涂料直接转移技术的工艺难点。

So it is very necessary to enhance research sanding due to rock destroyed around shot hole.

因此，加强对高含水期炮眼周围岩石的破坏导致出砂的研究显得十分必要。

I don t plan on sanding the material as it will not be visible from outside the sub.

我不打算对砂的物质，因为这将不可见以外的小组。

After backwashing, the regeneration ratio of the reactors filled with sulphonated coal, fruit hull, plastic of PVC and old plastic in recovery are all bigger than the one filled with quartz sand.

反冲洗后，以磺化煤、果壳、PVC塑料和回收旧塑料作填料的电解槽再生率均大于石英砂的。

It is shown that the chlorinating process for fluorine-fixed calcine agreed well with the regional reaction rate model presented by Bagdasarym. The process consisted of two tandem steps, Erofeev Equation ln[ln(1a)]=lnk+nlnt was used to deal with the equation of reaction rate,the function between rate constant and temperature was k=2.7?07e125900/RT. The a...

结果表明：固氟焙砂的氯化反应动力学过程是区域反应速率模型，氯化反应过程经过了2个串联反应步骤，用Erofeev方程ln[ln(1a)]=lnk+nlnt处理反应速率，反应速率常数与温度T的函数关系式为k=2.7107eEa/RT，表观活化能Ea为125.9 kJ/mol，过程限制环节主要是界面化学反应控制。

This paper firstly discusses the characteristics of high permeability reservoirs and puts forward the fracturing methods.

本文针对中、高渗透性油藏的特点，考虑压裂提高产能和防砂的需要，研究提出了支撑剂选择方法。

Abletrophies.com specializes in deep etched, sandblasted crystal awards, marble awards, and glass awards.

Abletrophies.com专门制作的是经过深雕刻和喷砂的水晶、大理石和玻璃奖品。

Next you want to sand the area where the bulkheads will be glued with 30 minute epoxy.

接下来，您要砂的地方舱壁将胶合板与30分钟的环氧树脂。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。