20~30m

Sample Sentence

Definition:

AllAll

Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical

Source:AllAll,DictionaryDictionary,WebWeb

Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard

More sentence filters

Hide sentence filters

1.

Generally, for the stratum of median soft , the service life of the hard alloy bit is 20-30m, Smaller than PDC bit far .

一般情况下对于中软地层，硬质合金钻头的使用寿命为 20~30m 。远小于 PDC 钻头。

yì bān qíng kuàng xià duì yú zhōng ruǎn dì céng , yìng zhì hé jīn zuàn tóu de shǐ yòng shòu mìng wèi èr shí zhì sān shí mǐ 。 yuǎn xiǎo yú PDC zuàn tóu 。