Ua ntej, lub hauv paus ntsiab lus ntawm kev teeb tsa cov kab rov tav txiab
【Hom】
① teeb kab rov tav txiab txiab txhawb nqa rau saum;
②Thua qhov siab erection ntau tshaj 8m lossis tag nrho cov kev siv khoom siv tau loj dua 15kn / m, lub ntsej muag ci ntsa iab dua li 10m.
【Txhim Kho】
① teeb kab rov tav txiab txiab txhawb nqa rau saum;
②when qhov siab erection ntau tshaj 6m lossis tag nrho cov kev siv khoom siv yog ntau dua li $ 150
Thib ob, lub hauv paus ntsiab lus ntawm ntsug scissor txhawb kev teeb tsa
【Hom】
Qhov sab nraud tag nrho yog tag nrho, sab hauv yog teeb txhua txhua 5m-8m, thiab qhov dav ntawm cov txiab yog 5M-8m.
【Txhim Kho】
①what qhov chaw sib nraus ntsug yog 0.9m-1.2m, sab nraud sab nraud yog tag nrho, sab hauv yog teeb tsa ib sab scissor caj npab yog 4 spans;
②when txoj kab ntsug thiab kab rov tav yog 0.6m-0.9, sab nraud yog tag nrho 5 spans yog teeb tsa ntawm scissor brace yog 5 spans;
③when qhov chaw ntsug thiab tig rov qab yog 0.4m-0.6, sab nraud yog tag nrho 3M-3.2m, thiab qhov dav ntawm txiab yog 3M-3.2 spans.
Lub sij hawm Post: Lub Yim Hli 19-2022