parent material

常見例句

Using J607RH welding rod made in China, the weld seam metal and the parent material are of iso-strength.
銲縫金屬與母材的強度配郃表現(xiàn)爲等強匹配，國産J607RH銲條均能與之獲得較好的強度匹配。
The internal relations between the development of principal soil genus and sedimentary parent material types are analysed.
濱湖相和海相五種類型，初步探討了該平原主要土屬的發(fā)育與沉積母質類型之間的內在關系。
Under the same parent material condition, urease activity was significantly correlated with forming time and maturity of soil.
在母質相同的情況下，脲酶活性高低又與成土時間的長短和土壤熟化程度呈正相關。