Polycrystalline tungsten is an inherently fragile and hard material (under standard conditions, when not combined), which makes the job difficult.
Polycrystalline tungsten ເປັນອຸປະກອນ intrinsically brittle ແລະຍາກ (ພາຍໃຕ້ເງື່ອນໄຂມາດຕະຖານ, ໃນເວລາທີ່ uncombined), ເຮັດໃຫ້ມັນຍາກທີ່ຈະເຮັດວຽກ.