12PCS Usage TV Set Repair Length 1115MM TV Model 55PUS7303 Packaging and delivery Selling Units: Single item Single package size: 90X50X30 cm Single gross weight: 15.000 kg Show more Lead time Samples Maximum order quantity: 1 set
混合液的pH=-lg0.01=2; 故答案为:2; ③设两溶液的体积为1L,1L pH=4的硫酸中氢离子的物质的量为:n(H+)=10-4mol, 1L pH=12的NaOH溶液中含有氢氧根离子的物质的量为:n(OH-)=10-2mol, NaOH过量,混合液中氢氧根离子浓度为:c(OH-)=10−2mol−10−4mol2L10−2mol−10−4mol2L,则c(H...
ซื้อ 620มม.LED Backlight Strip 7สำหรับ LB32080 V0_03 KDL-32R330D Lb-pf3030-GJD2P53153X7AHV2-D 32pht410 1/60 32lj500v 32pht4132 1/12 ที่ Aliexpress ในราคา ค้นหาผลิต