That allows packet senders to indicate what type of data is being sent, and packet receivers to learn a bit about a packet's data (called its payload) before digging into the data itself.
The manual digging pile is an economical and practical type of pile with the properties of high bearing capacity, great flexibility, low noise and no vibration of construction, etc.
人工挖孔灌注桩是一种经济实用的桩型，具有承载力高、灵活性大、施工噪音小、无振动等特点。
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2. The catalogue fittings no. And picture no. Are in accordance with those of taiyuan heavy - type machinery works and fushun digging machine factory.