- Loaïi B: Caûi taïo keânh theo maë

- Loaïi B: Caûi taïo keânh theo maët caét hình thang vôùi ñoä doác maùi keânh laø 1:2 vaø troàng coû baûo veä maùi keânh, aùp duïng cho vieäc caûi taïo keânh raïch ôû vuøng ngoaïi thaønh, nôi maø vieäc thu hoài ñaát ít khoù khaên.

結果 (英文) 1:

-Type B: I create a channel as either cut shape with an maùi mode of channels is 1:2 and troàng coû protective maùi channel, apply for work I create a channel raïch in the area of the external battery, cradle, used to open tough little sudhanshu.

結果 (英文) 2:

- Type B: Improvement Creating trapezoidal channel in accordance with the level for cash Cut Maui channel slope is 1: 2 and planted cou protect Maui channel, apply to WORK Improvement Creating MUNICIPAL outpatient area that OU and canals, nostalgic environment where the recording of land less difficulty towel.