英语翻译After we read the contract,we want to make sure the foll

英语翻译
After we read the contract,we want to make sure the followin:
1.Fe Content of Iron ORE Lumps.
2.the actual in the contract,you talk twice about free Moisture loss.You use 105% degrees centigrade.and 105 degrees centigrade.why is there such difference?
3.please explain these furthuer:provisional invice(98%).48(forty eight) notification.in clause 10.1,you use 65.00% iron ORE.what does it mean?
4.explain the lase sentence of clause 13.buyer shall make final payment to selle on the basis of the analysis at the loading port.
The last sentence in clause 14
Mom-availability of misterial will not be an excuse to the seller for not performing their obligations under this contract.
You should expecially explain the word masterial.