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1·As the acute Angle styled opener often tends to hang the roots and jam during direct seeding in the corn field with big roots, we adopt a new way which USES the stagger double-disk opener.

针对在玉米根茬较大，田地免耕直播时锐角式开沟器易出现挂茬、堵塞等问题，提出了采用错开双圆盘开沟器的方案。

2·In the investigated cooling channel with different Angle stagger jets, the big jets cause swirl flow in the middle of channel and make the swirl flow stronger.

在不同射流角度的错排射流的冷却通道中，大射流从射流孔冲击出来后在通道内形成旋涡，并使旋涡变得更强烈。

3·Oar-blade set is composed of main oar-blade 4 and subsidiary one 2. which lean and stagger some angle with the level and are laid relatively in direction.

浆叶装置由主浆叶4和副浆叶2构成，主、副浆叶与水平面倾斜，相错一定角度，方向相对布置。