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We have planted trees as a hedge against shifting sand. 我们植树以防流沙的侵袭。
Some measures are needed to secure the farmland against shifting sand. 需要采取措施使农田免遭流沙的侵袭。
sand control forest 防砂林
I always built alas on weak and shifting sand. 我在虚浮的沙地上构筑理想。
We have planted tree as a hedge against shift sand. 我们植树以防流沙的侵袭。
Some measures are needed to secure the farmland against shift sand. 需要采取措施使农田免遭流沙的侵袭。
We have planted trees as a hedgeagainst shifting sand. 我们植树以防流沙的侵袭。
We have planted trees as a hedge against shift sand. 我们植树以防流沙的侵袭。
The wooden hull parts that we find have been buried by shifting sand or mud. 我们发现的木船船体的某些部分是埋在流沙或泥中的。
These tree belts protect500000acres of farmland against shifting sand. 这些防护林带保护了50万英亩的农田不受流沙的侵袭。
These tree belts protected500000acres of farmland against shifting sand. 这些防护林带保护了50万英亩农田不受流沙侵袭。
They have made plans to hold shifting sands. 他们制订了控制流沙的计划。
These tree belts protect 500,000 acres of farmland against shifting sand. 这些保护林带保护了50万英亩的农田不受流沙的侵袭。
These tree belts effectively protect the farmland against shifting sand. 这些防护林带有效地保护了农田，使之免受流沙侵袭。
Control forest moles were tested by biological sterile drug.The results showed pregnant rate of female nature mole was decreased 55%.More biological drug dosage the more effect. 通过生物性不育剂防治森林害鼠试验,结果表明,雌成年鼠怀胎率下降55%25,高投药量会得到高效。
In conclusion, ecomat chessboard type is the best measure for sand control ecologically and economically in this region. 从生态和经济的角度综合考虑，钻字状铺设显然是该区域流沙防治措施中较好的选择。
Therefore, oil viscosity m ust be considered in sand control design in viscous oil field. 因此 ,对稠油油藏进行防砂设计时应考虑原油黏度的影响
Therefore, the sand control strength can be improved through adding the fibred to the coated sand. 所以,在覆膜砂中加入纤维,可以提高覆膜砂的挡砂强度等性能。
Therefore, the sand control strength can be improved through adding the fibre to the coated sand. 所以,在覆膜砂中加入纤维,可以提高覆膜砂的挡砂强度等性能。
Separate implementation of sand control,water plugging and injectivity profile control had brought formation damage. 稠油油藏在开发过程中常遇到出砂、出水的问题,开采时分别进行防砂、堵水、调剖3种措施给地层带来了伤害。