Insitu permeation test plays an important position in calculating parameters of rock formation included aeration zone, because of its high precision, convenient, simple and low cost.
原位渗水试验因精度高(较室内试验)、简便易行和经济成本低而在包气带岩层参数的求取中占有重要地位。
As a highly efficient and low-cost special casting method, horizontal centrifugal casting occupies a decisive position in material molding methods.
卧式离心铸造作为一种效率高、成本低的特种铸造方法,在材料成型方法中占有举足轻重的地位。
In China, sports goods enterprises have a low manufacturing cost yet a high trading cost, and are in an inferior position in supply chain competition.
我国体育用品企业制造成本低,但交易成本高且在供应链竞争上处于劣势。
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