Its role is to block the brain cells may be voltage-dependent sodium channels, which can prevent the spread of lesions discharge.
其作用可能在于阻断脑细胞的电压依赖性钠通道，因而可阻止病灶放电的散布。
The spread drill, application of PHP mud and choice of machine are solved by adopting two machines of KTY4000 and KPG3000A. Besides, the airlift reversing circulation is selected in slag discharge.
通过采用KTY4000型钻机和KPG3000A两种机型工程钻机成孔，排渣方式为气举反循环，以解决糊钻、PHP泥浆应用、钻机选型等问题。
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